Combined With Feedback Patents (Class 700/45)
  • Patent number: 10809753
    Abstract: Systems and methods for simulating and controlling a power system in real time, using a controller, are provided. The controller includes a simulation layer to simulate an operation of the power system, a disturbance generation layer to provide data to the simulation layer to disturb the simulated operation of the power system, an application layer to display the simulated operation of the power system and generate a control signal to control, based on the simulated operation of the power system, at least one element of the power system, and a distributed data streaming server (D2S2) to allow interoperability among the simulation layer, the disturbance layer, and the application layer.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: October 20, 2020
    Assignee: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION
    Inventors: Fangxing Li, Hantao Cui, MohammadReza AhmadzadehRaji, Kevin Louis Tomsovic, Yilu Liu, Jian Huang
  • Patent number: 10768610
    Abstract: An integration server manages production in a manufacturing line that includes a first stage and a second stage carried out after the first stage. The integration server includes a communicator that acquires a first production log and a second production log. The first production log includes a first production count of processing objects in the first stage. The second production log includes the number of processing objects in the second stage. The integration server also includes an irregularity detector that detects the presence of irregularity in the first production log and the second production log on the basis of the first production count and the number of the processing objects in the second stage.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 8, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Yuji Unagami, Takuji Hiramoto, Tatsumi Oba, Tomohiro Oda, Naoki Ochi
  • Patent number: 10316784
    Abstract: An engine assembly includes an engine and a plurality of actuators. The plurality of actuators includes a first turbine serially connected to a second turbine, the first turbine being a relatively high pressure turbine and the second turbine being a relatively low pressure turbine. A controller is configured to transmit respective command signals to the plurality of actuators. The controller is programmed to obtain respective transfer rates for the plurality of actuators based at least partially on an inversion model. The controller is programmed to control an output of the engine by commanding the plurality of actuators to respective operating parameters via the respective command signals. Prior to obtaining the respective transfer rates, the controller is programmed to determine a respective plurality of desired values and respective correction factors for the plurality of actuators.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: June 11, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Yue-Yun Wang, Ibrahim Haskara, Giuseppe Conte, Carmen Pedicini
  • Patent number: 10222790
    Abstract: A flowchart of a process plant is compiled by linking graphical process objects representing operator-controllable and observable facilities of the plant when planning a process plant, wherein the process in the process plant is simulated with reference to simulation models assigned to the graphical process objects during a simulation phase, where simulation models include energy consumption models that describe the electrical energy consumption of the respective facilities to be described as a function of measurable or known process variables in the plant and hence enable simulation and optimization of the automation with respect to electrical energy consumption and energy efficiency.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: March 5, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Oliver Drumm, Henning Lenz, Benjamin Lutz, Gerrit Wolf
  • Patent number: 9706623
    Abstract: At least one controllable source of visible light is configured to illuminate a space to be utilized by one or more occupants. A controller causes the source(s) to emit light in a manner that varies at least one characteristic of visible light emitted into the space over a period of time at least in part in accordance with a chaotic function. Responsive to user input, sensed activity, and/or acquired information, the source(s) are controlled by the controller in accordance with a lighting control function which may be modified based on learning by a device or system including the controller.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: July 11, 2017
    Assignee: ABL IP HOLDING LLC
    Inventors: Jack C. Rains, Jr., Januk Aggarwal, David P. Ramer
  • Patent number: 9177873
    Abstract: Methods and systems are provided for fabricating and measuring physical features of a semiconductor device structure. An exemplary method of fabricating a semiconductor device structure involves obtaining raw measurement data for a wafer of semiconductor material from a metrology tool and adjusting a measurement model utilized by a metrology tool based at least in part on the raw measurement data and a value for a design parameter. The wafer has that value for the design parameter and an attribute of the semiconductor device structure fabricated thereon, wherein the measurement model is utilized by the metrology tool to convert the raw measurement data to a measurement value for the attribute.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 3, 2015
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Alok Vaid, Carsten Hartig, Lokesh Subramany
  • Patent number: 9052005
    Abstract: A control method is provided for an electric motor which drives an apparatus through a gear unit. The method includes generating a gear output and input speed signals, low pass filtering the gear speed signals and subtracting the filtered gear input speed signal from the filtered gear output speed signal to provide a relative speed signal. The method also includes high pass filtering the relative speed signal, multiplying the filtered relative speed signal by damping gain value to generate a backlash compensation torque value, and subtracting the backlash compensation torque value from an apparatus control torque value to generate the desired motor torque value.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: June 9, 2015
    Assignee: DEERE & COMPANY
    Inventors: Patrick W. Cross, Matthew L. Spencer, Byron K. Miller, Jeffrey D. Dawson
  • Patent number: 9011737
    Abstract: A system for making PET objects including a means for reacting a first PET precursor and a second PET precursor to produce a PET melt; a means for flowing the PET melt to a valve having at least two outlets; a means for flowing the PET melt from at least one of the at least two outlets to at least one die forming line and one pelletizing (cutter) line. A means for controlling individually the mass flow of the PET melt in each of the at least two system lines independently of the other and a means for forming the PET objects from the PET melt. The control scheme is a combination of a feed forward system as well as a feedback loop. The entire control scheme is part of the overall system PLC. The fine tuning of the pressure at the outlet of the die forming loop is controllers to less than +/?1 bar to obtain maximum control of formed part.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: April 21, 2015
    Assignee: Chemlink Capital Ltd.
    Inventors: Nicholas P. Barakat, William Karszes
  • Patent number: 9005261
    Abstract: A therapeutic laser with a source of pulsed electromagnetic radiation, a control device for controlling the intensity and/or the duration of the therapeutic laser applied to the tissue, and a detection device for detecting optoacoustic signals triggered by irradiating the living tissue with the pulsed electromagnetic radiation. The therapeutic laser is characterized by an evaluation device that acts on the control device and is used for calculating a degree of quality B(t) from the optoacoustic signals detected by the detection device for individual laser pulses applied to a predetermined laser spot and determining a fit function f(t) at a predetermined point in time ?t1, the fit function f(t) approximating the mean curve of B(t) for 0?t??t1. The intensity and/or the irradiation time of the therapeutic laser is defined by the parameters for the predetermined laser spot, the parameters being determined for the fit function f(t).
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: April 14, 2015
    Assignee: Medizinisches Laserzentrum Luebech GmbH
    Inventor: Ralf Brinkmann
  • Patent number: 9004107
    Abstract: The present invention provides methods and apparatus for controlling gas flow to a semiconductor-processing chamber. The invention includes deactivating ratio setpoint feedback control in a flow ratio controller; initiating gas flow through the flow ratio controller; moving valves of the flow ratio controller to a preset position based on a stored position when an upstream pressure reaches a stored upstream pressure value, wherein the stored position and the stored upstream pressure value were stored during a prior process run; determining that steady state flow ratio controller output flows have been reached; and activating ratio setpoint feedback control in the flow ratio controller. Numerous additional features are disclosed.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: April 14, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Mariusch Gregor, John W. Lane, Michael Robert Rice, Justin Hough
  • Patent number: 9007008
    Abstract: A method for controlling the operation of an arrangement of at least two electric machines coupled to different wheels of a motor vehicle and connected to a battery which provides an actual minimum and maximum limiting current for the electric machines. Desired torques are provided for the electric machines by a drive control logic. A desired current resulting from the desired torque is ascertained for each electric machine, and the sum of the desired currents are compared with the maximum and minimum limiting current. If the sum lies outside an interval defined by the limiting currents, the desired currents are adjusted using at least one change rule such that the sum of the desired currents lies within the interval. Adjusted desired torques are determined from the adjusted desired currents and used to control the electric machines.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: April 14, 2015
    Assignee: Audi AG
    Inventors: Alexander Kruse, Tobias Schneider
  • Patent number: 8989877
    Abstract: A system for controlling a machine includes a first model, a second model, a controller, and a comparator. During a first cycle, the first model generates a response signal to the controller while the second model generates a predicted parameter signal. During the first cycle, the comparator transmits a feedback signal to the second model if a predetermined threshold is not met. A method for controlling a machine includes transmitting a response signal from a first model to a controller, generating a control signal to the machine, and generating a predicted parameter value in a second model. The method further includes transmitting a feedback signal to the second model if a predetermined threshold is not met.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: March 24, 2015
    Assignee: General Electric Company
    Inventor: Hartmut Scholte-Wassink
  • Patent number: 8942620
    Abstract: A method and an apparatus according to an embodiment of the invention includes a controller to process a criterion for selecting a point-of-interest (POI). The criterion can be based on historical trip data. Data related to a POI, including a community-of-interest rating, for example, can be accessed through a satellite and terrestrial mobile communication network. Multiple POIs can be graphically represented for user selection based on the criterion and/or other data. Once a POI is selected, data related to the selected POI, including navigation data, can be displayed. In another embodiment, the controller can access navigation data to a specified destination. The navigation data can be based on historical trip data such as route segments and destination areas. The navigation data can be accessed from an in-vehicle system or from a navigation service provider and can be displayed to assist a user in reaching the specified destination.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 27, 2015
    Assignee: Dish Network Corporation
    Inventor: Stefan Bernard Raab
  • Patent number: 8922938
    Abstract: A disk drive is disclosed comprising a servo control system operable to actuate a head over a disk. A disturbance signal is generated in response to a vibration, and the disturbance signal is filtered with a first filter comprising a frequency response to generate a filtered disturbance signal. The filtered disturbance signal is filtered with a model of the servo control system to generate a compensated disturbance signal. An error signal of the servo control system is filtered with a second filter comprising the frequency response to generate a filtered error signal. An adaptation control signal is generated in response to the compensated disturbance signal and the filtered error signal, and an adaptive filter is adapted in response to the adaptation control signal, wherein the adaptive filter filters the disturbance signal to generate feed-forward compensation values applied to the servo control system to compensate for the vibration.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: December 30, 2014
    Assignee: Western Digital Technologies, Inc.
    Inventors: Xu Chen, Jianguo Zhou, Wei Xi, Kuang-Yang Tu, Guoxiao Guo
  • Patent number: 8910478
    Abstract: A novel 3-Input-3-Output (3×3) Fuel-Air Ratio Model-Free Adaptive (MFA) controller is introduced, which can effectively control key process variables including Bed Temperature, Excess O2, and Furnace Negative Pressure of combustion processes of advanced boilers. A novel 7-input-7-output (7×7) MFA control system is also described for controlling a combined 3-Input-3-Output (3×3) process of Boiler-Turbine-Generator (BTG) units and a 5×5 CFB combustion process of advanced boilers. Those boilers include Circulating Fluidized-Bed (CFB) Boilers and Once-Through Supercritical Circulating Fluidized-Bed (OTSC CFB) Boilers.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: December 16, 2014
    Assignee: General Cybernation Group, Inc.
    Inventors: George Shu-Xing Cheng, Steven L. Mulkey
  • Patent number: 8909359
    Abstract: A system for operating a process includes a processing circuit that uses a self-optimizing control strategy to learn a steady-state relationship between an input and an output. The processing circuit is configured to switch from using the self-optimizing control strategy to using a different control strategy that operates based on the learned steady-state relationship.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 9, 2014
    Assignee: Johnson Controls Technology Company
    Inventor: John E. Seem
  • Patent number: 8896255
    Abstract: A servo controller, capable of controlling the motion of a movable body with high accuracy, without depending on the position of the movable body which is moved on a ball screw. The servo controller has a position command generating part which generates a position command value; a velocity command generating part which generates a velocity command value based on the position command value and a position detection value; a torque command generating part which generates a torque command value based on the velocity command value and a velocity detection value; and a position compensation calculating part which calculates an amount of expansion/contraction of the ball screw based on a distance from the servomotor to a nut threadably engaged with the ball screw and the torque command value, and calculates a position compensation based on the amount of expansion/contraction.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 25, 2014
    Assignee: Fanuc Corporation
    Inventors: Yasusuke Iwashita, Kenichi Takayama, Satoshi Ikai
  • Patent number: 8868250
    Abstract: In one implementation, an environmental controller operates a cooling system in an electronic device. The environmental controller includes a closed loop control system for operating a cooling fan at a target speed. The environmental controller may select the target speed based on one or more temperature sensors. The environmental controller may select the target speed based on the speeds of additional fans or the fans may be controlled in unison. The closed loop control system includes a proportional weight. When a measured cooling fan speed deviates from the target speed by more than a threshold error value, the proportional weight is constant. As the measured cooling fan speed approaches the target speed, and the threshold error value is crossed, the proportional weight is variable. The variance may be a function of time such as a periodic stair step function.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: October 21, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Niels-Peder Mosegaard Jensen, Joseph Dean Jaoudi
  • Patent number: 8868221
    Abstract: A feed forward system includes an input device configured to receive a desired response of the mechanical system and a trainable system configured to generate a feed forward signal that drives the mechanical system based on the desired response. The trainable system is trained based on a plurality of measured responses of the mechanical system.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: October 21, 2014
    Assignee: Marvell International Ltd.
    Inventor: James Mealy
  • Patent number: 8838257
    Abstract: Methods, systems, and computer program products for compensating unstable linear time-invariant due to input nonlinearities are described. In one implementation, compensating a controlled device may include controlling the controlled device using feedforward control. In another implementation, compensating the controlled device may include controlling the controlled device using feedback control.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: September 16, 2014
    Assignee: Marvell International Ltd.
    Inventors: Kiyotada Ito, Takahiro Inoue
  • Patent number: 8825185
    Abstract: A control system for using a predictive control with a control process having a time delay includes an adaptive feedback controller and a predictor. The predictor uses at least an adaptively updated control parameter from the adaptive feedback controller to predict the output of the control process during the time delay. The control system further includes a filter that dampens the rate of change of the adaptively updated control parameter provided to the predictor from the adaptive feedback controller to slow the adaptation of the predictor relative to the adaptation of the adaptive feedback controller.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: September 2, 2014
    Assignee: Johnson Controls Technology Company
    Inventor: Timothy Salsbury
  • Patent number: 8825182
    Abstract: A position control system to control the position of a movable object, including a position measurement system configured to determine an actual position related quantity of the movable object; a set-point generator to provide a position related set-point signal of the movable object; a comparator to provide an error signal on the basis of a comparison of the actual position related quantity and the position related set-point signal, a controller to provide a control signal on the basis of the error signal, a feed-forward device to provide a feed-forward signal on the basis of the position related set-point signal, and one or more actuators to act on the movable object on the basis of the control signal and the feed-forward signal, wherein the feed-forward device includes a disturbance force correction table including estimations of disturbance forces exerted on the movable object in dependence of a position of the movable object.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 2, 2014
    Assignee: ASML Netherlands B.V.
    Inventors: Wilhelmus Franciscus Johannes Simons, Norbertus Josephus Martinus Van Den Nieuwelaar, Marcel François Heertjes, Joost Jozef Hendrik Gielis, Ferdinand Bernardus Johannus Wilhelmus Maria Hendriks
  • Patent number: 8812166
    Abstract: In a method for supplying a resource to an entity from a resource actuator, a plurality of physics-based models pertaining to the resource actuator and the entity are developed, a condition detected at the entity is received, feedback control on a resource demand of the entity employed based upon the detected condition, feed forward control on the resource demand of the entity is employed based upon the detected condition and the plurality of physics-based models, a constraint optimization problem having an objective function and at least one constraint using the plurality of physics-based models is formulated, a solution to the constraint optimization problem is determined, in which the solution provides the actuator setting, and the resource actuator is set to the actuator setting to supply the entity with the resource from the resource actuator.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: August 19, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhikui Wang, Cullen E. Bash, Niraj Tolia, Manish Marwah, Parthasarathy Ranganathan, Shailesh N Joshi, Andrew James Phelan
  • Publication number: 20140195013
    Abstract: Multiple designs, systems, methods and processes for controlling a system or plant using an extended active disturbance rejection control (ADRC) based controller are presented. The extended ADRC controller accepts sensor information from the plant. The sensor information is used in conjunction with an extended state observer in combination with a predictor that estimates and predicts the current state of the plant and a co-joined estimate of the system disturbances and system dynamics. The extended state observer estimates and predictions are used in conjunction with a control law that generates an input to the system based in part on the extended state observer estimates and predictions as well as a desired trajectory for the plant to follow.
    Type: Application
    Filed: December 5, 2013
    Publication date: July 10, 2014
    Applicant: Cleveland State University
    Inventors: Zhiqiang Gao, Gang Tian
  • Patent number: 8768531
    Abstract: A centralized-monitoring apparatus, which centralized monitors a device including a storage, a temperature sensor to detect a temperature therein, and a temperature-variable device to cool or heat inside the storage such that the temperature reaches a set object-preservation temperature, comprises: an input device to be input with first information indicative of a time zone in which the temperature-variable device performing power-saving operation and second information indicative of a set temperature of the time zone; a storage device to store the first-and-second information from the input device; a timing device to measure a current time; and a control device to control the temperature-variable device, based on the first-and-second information and current time, so as to start operation of turning the temperature to the set temperature when the current time reaches a starting time of the time zone, and terminate the operation when the current time reaches an ending time thereof.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: July 1, 2014
    Assignee: Panasonic Healthcare Co., Ltd.
    Inventors: Yasuaki Sonoda, Masanaga Tanaka, Ikue Nono, Shigeyuki Nakamura
  • Patent number: 8750790
    Abstract: A method and an apparatus according to an embodiment of the invention includes a controller to process a criterion for selecting a point-of-interest (POI). The criterion can be based on historical trip data. Data related to a POI, including a community-of-interest rating, for example, can be accessed through a satellite and terrestrial mobile communication network. Multiple POIs can be graphically represented for user selection based on the criterion and/or other data. Once a POI is selected, data related to the selected POI, including navigation data, can be displayed. In another embodiment, the controller can access navigation data to a specified destination. The navigation data can be based on historical trip data such as route segments and destination areas. The navigation data can be accessed from an in-vehicle system or from a navigation service provider and can be displayed to assist a user in reaching the specified destination.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 10, 2014
    Assignee: Dish Network Corporation
    Inventor: Stefan Bernard Raab
  • Patent number: 8688246
    Abstract: In a processing apparatus having: moveable parts disposed to form a predetermined processing environment within a processing chamber in which a predetermined processing is performed on an object to be processed; and a control means for controlling the operation of each of the moveable parts, abnormality inclusive of deterioration with time of the moveable parts constituting the processing apparatus is made to be easily judged. There is provided a vibration detection means for detecting the waveforms of vibrations that occur accompanied by the operation of the moveable parts. When control is made from the control means in order to operate any one of the moveable parts, there are obtained event data corresponding to the control and the waveforms of vibrations of all the moveable parts that are operating simultaneously at the time in question.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: April 1, 2014
    Assignee: Ulvac, Inc.
    Inventor: Yoshinori Fujii
  • Patent number: 8682454
    Abstract: A method and system for controlling a multivariable system. The method includes: (a) generating bias data as a function of model error in an on-board model; (b) updating a dynamic inversion algorithm with one or more model terms generated by the on-board model; (c) generating effector equation data by processing reference value data with the updated dynamic inversion algorithm, which effector equation data is indicative of one or more goal equations and one or more limit equations, and which reference value data is indicative of one or more goal values and one or more limit values and is determined as a function of predicted parameter data; (d) at least partially adjusting at least one of the reference value data and predicted parameter data for the model error using the bias data; and (e) generating one or more effector signals by processing the effector equation data with an optimization algorithm.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 25, 2014
    Assignee: United Technologies Corporation
    Inventors: James W. Fuller, Richard P. Meisner
  • Patent number: 8670945
    Abstract: A method includes obtaining information identifying a predicted trajectory of material-based measurements associated with a transfer of material. The method also includes obtaining actual material-based measurements during the transfer of the material and determining whether the actual material-based measurements fall outside of the predicted trajectory. The method further includes identifying a problem with the transfer of the material if at least one of the actual material-based measurements falls outside of the predicted trajectory. The method may also include generating the predicted trajectory of the material-based measurements using historical data associated with one or more prior transfers, such as historical data associated with at least one pump to be used during the transfer of the material. The actual material-based measurements could include measurements of a level and/or a volume of the material in a tank.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 11, 2014
    Assignee: Honeywell International Inc.
    Inventor: Adrianus Leonardus David van Schie
  • Patent number: 8666556
    Abstract: In some embodiments, a method of using feedforward to control a system component may include determining if a feedforward term exists in a feedforward table for a received operating set point. If a feedforward term does not exist, the system component may be incremented until the system is within a first acceptable tolerance of the desired set point. In some embodiments, a measure of steady state error may be determined and compared to a second acceptable tolerance. If within the acceptable tolerance, the corresponding feedforward term may be recorded in the feedforward table. In some embodiments, if the feedforward term exists for the operating set point, the system component may be controlled using controller output that corresponds to the feedforward term. When a change to the system is detected that is associated with possible changes to the feedforward values, new feedforward values may be generated for the feedforward table.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: March 4, 2014
    Assignee: Alcon Research, Ltd.
    Inventor: Daryush Agahi
  • Patent number: 8644963
    Abstract: Multiple designs, systems, methods and processes for controlling a system or plant using an extended active disturbance rejection control (ADRC) based controller are presented. The extended ADRC controller accepts sensor information from the plant. The sensor information is used in conjunction with an extended state observer in combination with a predictor that estimates and predicts the current state of the plant and a co-joined estimate of the system disturbances and system dynamics. The extended state observer estimates and predictions are used in conjunction with a control law that generates an input to the system based in part on the extended state observer estimates and predictions as well as a desired trajectory for the plant to follow.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: February 4, 2014
    Assignee: Cleveland State University
    Inventors: Zhiqiang Gao, Gang Tian
  • Patent number: 8594852
    Abstract: A device for controlling the motion of a fluid actuator which includes an electrically operated control valve that controls the flow of a pressurized fluid to and from the fluid actuator in response to signals generated by an actuator controller which uses an on-board, user programmable microprocessor where the user can download various control algorithms into the microprocessor for controlling the motion of the actuator based on such parameters as fluid pressure and flow rates and actuator displacement. Various external sensors can be connected to the controller for monitoring and control purposes using various signal interfaces such as an analog to digital converter or an SSI interface.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: November 26, 2013
    Assignee: Eaton Corporation
    Inventors: Kevin Eric Alstrin, Peter Lauer, Bert Robb
  • Patent number: 8571691
    Abstract: Controller scaling and parameterization are described. Techniques that can be improved by employing the scaling and parameterization include, but are not limited to, controller design, tuning and optimization. The scaling and parameterization methods described here apply to transfer function based controllers, including PID controllers. The parameterization methods also applies to state feedback and state observer based controllers, as well as linear active disturbance rejection controllers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the application. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: October 29, 2013
    Assignee: Cleveland State University
    Inventor: Zhiqiang Gao
  • Patent number: 8554344
    Abstract: The present invention relates to a compact motorized rotational stage for microscopy applications and control methods for automated sample orientation/rotation. The rotational stage includes a motor, a rotational motion transmission mechanism, and a rotating sample holder for accommodating a holding device such as glass slides/Petri dishes of different sizes. Mouse embryos are used as an example to explain the control methods. A pattern recognition utility was developed for identifying mouse embryo structures. The transformation between the holding device rotational coordinate frame and the translational positioning stage coordinate frame is calibrated during image-based visual servo control. The polar body of an embryo is oriented through purely image-based visual servo control or through coordinate transformation and closed-loop position control.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: October 8, 2013
    Inventors: Yu Sun, Xinyu Liu
  • Patent number: 8527074
    Abstract: A sensor arrangement, particularly for a passenger protection system of a motor vehicle, comprising a first group of sensors (10, 12) by means of which a first group of state parameters jointly usable by a first decision making unit connected downstream for detecting a first event can be detected, a first digital unit (20) coupled on the input side to at least one sensor (12) of the first sensor group. The arrangement processes the sensor output signals fed thereto and providing the same for forwarding to the first decision making unit as digital values. A second group of sensors (14, 16, 18), by means of which a second group of state parameters jointly useable by a second decision making unit is connected downstream for detecting a second event can be detected with a second digital unit coupled on the input side to at least one sensor (16, 18) of the second sensor group.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: September 3, 2013
    Assignee: Autoliv Development AB
    Inventors: Mark Willerton, Richard Baur, Stephan Muhr, Klaus Achatz
  • Patent number: 8521310
    Abstract: A system and method are provided for integrated management of a biofuel distillation process and a biofuel dehydration process of a biofuel production process, comprising a dynamic multivariate model-based controller coupled to a dynamic multivariate predictive model. The model is executable to: receive distillation and dehydration process information including biofuel compositions, receive an objective for biofuel production output from the distillation and dehydration processes, e.g., target product composition, production rate, and/or feed rate, and generate model output comprising target values for a plurality of manipulated variables related to the distillation and dehydration processes in accordance with the objective. The controller is operable to dynamically control the biofuel production process by adjusting the plurality of manipulated variables to the model-determined target values in accordance with the objective for biofuel production.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: August 27, 2013
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Celso Axelrud, Maina A. Macharia, Michael E. Tay
  • Patent number: 8473113
    Abstract: An on-line compensation apparatus for feedback positions of an encoder and method for operating the same are applied to a motor driven to rotate at a constant speed by a driver, thus compensating the errors of feedback positions of the encoder. First, a compensation quantity calculation unit is used to calculate the compensation quantity of feedback positions of the encoder. Afterward, a position interval judgment unit is used to determine the position interval of the compensation quantity. Finally, a compensation quantity modification unit is used to modify the compensation quantity by using different weightings. Therefore, the compensation quantity is modified by an iteration calculation to achieve that an error between the feedback position and an ideal position is in an acceptable region, thus increasing accuracy of the feedback position compensation of the encoder.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: June 25, 2013
    Assignee: Delta Electronics, Inc.
    Inventor: Chia-Chih Chou
  • Patent number: 8473105
    Abstract: The present invention provides a method for feedback control and a device using the same, wherein the device comprising a sensing layer for generating a plurality of sensing signals with respect to the at least one kind of characteristics on the sensing layer, and a driving layer for changing the surface status of the sensing layer. The control method is started a step of acquiring the plurality of sensing signals within a first specific time interval and establishing a first prediction model accordingly, then predicting a distribution status with respect to the at least one kind of characteristic on the sensing layer at a specific time point according to the first prediction model, and finally, determining whether to change the surface status of the sensing layer according to the distribution status.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: June 25, 2013
    Assignee: National Chiao Tung University
    Inventors: Chia-Chi Chang, Tzu-Chien Hsiao
  • Patent number: 8473170
    Abstract: The described system and method provide improved transmission performance and response with closed loop torque feedback by implementing situational gain scheduling and nonlinear control techniques for continuously variable transmissions. The system uses contextual information regarding the operation of the machine to determine a gain to be applied in associated PID control logic. In an embodiment, the determined gain is applied in the integral portion of the closed loop controller.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: June 25, 2013
    Assignee: Caterpillar Inc.
    Inventors: Jason Stoller, Adam Vaccari
  • Publication number: 20130150984
    Abstract: A test system can comprise a controller configured to provide a closed loop. The closed loop can comprise a forward transfer function with programmable coefficients that is configured to receive a signal corresponding to a command signal. The closed loop can also comprise a feedback transfer function having programmable coefficients and can be configured to provide a feedback signal that is subtracted from the command signal. The controller can be configured to provide a control signal corresponding to an output of the forward transfer function.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 13, 2013
    Inventors: Richard M. Nigro, Gregory E. Wehrung, Daniel P. Glynn, Christopher F. Oleksy
  • Patent number: 8463411
    Abstract: One or more techniques are provided for the sharing of variable trajectories between multiple controllers in a control system. In general, the present technique is based upon the sharing of predicted desired variable trajectories between multiple controllers requiring a common input variable. In one embodiment, a common input variable is shared between two controllers, wherein one controller is tuned to have dominant control with regard to the shared variable. Each controller determines and communicates their own desired trajectory for the shared variable to the other controller and in doing so, the constraints associated with each controller are shared and honored by the other controller. Based on the communicated trajectories, the dominant controller may exercise control over the shared variable, thus improving overall process control.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: June 11, 2013
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Brian Kent Stephenson, Lina M. Rueda Velandia
  • Patent number: 8452425
    Abstract: A position control device for suppressing occurrence of stick-slip during a feed operation performed in a very low speed region is provided. Adders add an output obtained by multiplying actual speed deviation by a proportional gain, an integral component of actual speed deviation obtained by inputting actual speed deviation to an integral compensator, an output obtained by multiplying motor speed deviation by a proportional gain, and an integral component of the motor speed deviation obtained by inputting motor speed deviation to an integral compensator. The result is output as a torque feedback command. Each integral compensator has a coefficient changer capable of changing a coefficient from 0 to 1 to adjust integral gains in accordance with a speed feedforward command or a speed command. Large integral gain increases the response speed of switching from static to kinetic friction torque in a very low speed region thereby suppressing occurrence of stick-slip.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: May 28, 2013
    Assignee: Okuma Corporation
    Inventors: Yuji Kawazu, Tomohisa Kameyama
  • Patent number: 8452447
    Abstract: Telerobotic, telesurgical, and surgical robotic devices, systems, and methods selectively calibrate end effector jaws by bringing the jaw elements into engagement with each other. Commanded torque signals may bring the end effector elements into engagement while monitoring the resulting position of a drive system, optionally using a second derivative of the torque/position relationship so as to identify an end effector engagement position. Calibration can allow the end effector engagement position to correspond to a nominal closed position of an input handle by compensating for wear on the end effector, the end effector drive system, then manipulator, the manipulator drive system, the manipulator/end effector interfacing, and manufacturing tolerances.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 28, 2013
    Assignee: Intuitive Surgical Operations, Inc.
    Inventor: Tom Nixon
  • Patent number: 8432119
    Abstract: Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include workpiece surface finish, and the ability to generate chips of the desired length.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: April 30, 2013
    Assignee: Babcock & Wilcox Technical Services Y-12, LLC
    Inventors: William E. Barkman, Edwin F. Babelay, Jr., Kevin Scott Smith, Thomas S. Assaid, Justin T. McFarland, David A. Tursky, Bethany Woody, David Adams
  • Patent number: 8417362
    Abstract: A computer comprising a recordable medium on which is stored instructions for at least one model-based, run-to-run controller routine is provided. The computer includes instructions to receive a first dataset regarding a first wafer after a first process, to determine a process parameter for the first process for a second wafer using the first dataset; and to determine a second process parameter for a second process for the first wafer using the first dataset. In an embodiment, the first process is an etch process. In an embodiment, the second process is a planarization process.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: April 9, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hsueh Chi Shen, Chun-Hsien Lin
  • Patent number: 8406905
    Abstract: Controller scaling and parameterization are described. Techniques that can be improved by employing the scaling and parameterization include, but are not limited to, controller design, tuning and optimization. The scaling and parameterization methods described here apply to transfer function based controllers, including PID controllers. The parameterization methods also applies to state feedback and state observer based controllers, as well as linear active disturbance rejection controllers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the application. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: March 26, 2013
    Assignee: Cleveland State University
    Inventor: Zhiqiang Gao
  • Patent number: 8401676
    Abstract: A mechanism for controlling a plant is provided. A reference signal is received at a signal transformation loop of a feedback controller. The signal transformation loop causes the reference signal to include a disturbance signal and a nominal signal. Also, the reference signal is received at a feed-forward controller, and the feed-forward controller recreates the disturbance signal that was caused by the signal transformation loop. The output of the feedback controller is input into a plant. The output of the feed-forward controller is input into the plant such that the disturbance signal is removed from the output of the feedback controller.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: March 19, 2013
    Assignee: International Business Machines Corporation
    Inventors: Angeliki Pantazi, Abu Sebastian, Tomas Tuma
  • Patent number: 8358097
    Abstract: A system for controlling a motorized track light system constrained to travel along a track has a control unit coupled to a motor that causes the track light system to move along the track, a plurality of stop sensors strategically disposed along the track, a sensor activation device located on the track light system, the sensor activation device positioned to interface with the stop sensors, and a light sensor for detecting ambient light of a preset level. The system detects a preset level of ambient light, initiating power to the motor of the track light system, moving the lights along the track until the activation device interfaces with a first of the plurality of stop sensors, stopping movement of the track light system along the track for a preset period of time, and at the end of the preset time period, the electrical power is restored to the motor moving the track light assembly along the track to the next of the plurality of stop sensors.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: January 22, 2013
    Inventor: Brent A. Cartwright
  • Patent number: 8355828
    Abstract: A power model that relates the settings of resource actuators to power consumption levels of the resource actuators and a condition model that relates the settings of the resource actuators to an environmental condition at the location of the at least one entity and a power consumption level of the at least one entity are developed. A constraint optimization problem having an objective function and at least one constraint is formulated, where the objective function computes at least a proportional quantity of a total power consumption level of the resource actuators and the at least one constraint comprises a setpoint environmental condition at a location of the at least entity. A solution to the constraint optimization problem is determined, where the solution provides optimal values for the resource actuator settings.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: January 15, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Niraj Tolia, Zhikui Wang, Manish Marwah, Cullen E. Bash, Parthasarathy Ranganathan, Xiaoyun Zhu
  • Patent number: 8352086
    Abstract: The present invention relates to a method for controlling a vibration isolation system, and an active vibration isolation system for vibration-isolated support of lithographic devices, wafer handling systems, and/or scanning microscopes. For this purpose the following are provided: a number of vibration transducers for supplying sensor signals which are representative of vibrations; a number of actuators for vibration compensation which may be controlled by supplying actuator control signals; a control device which is designed for processing the supplied sensor signals to form the actuator control signals, wherein the vibration transducers have at least one geophone sensor as a first acceleration sensor for detecting vibrations in a first frequency range, and at least one second acceleration sensor, which is different from the first acceleration sensor, for detecting vibrations in a second frequency range which extends the first frequency range.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: January 8, 2013
    Assignee: Integrated Dynamics Engineering GmbH
    Inventor: Peter Heiland