Variable Rate Patents (Class 700/74)
  • Patent number: 11471628
    Abstract: A system and accompanying assembly, of integrated or modular construction, for inflating and monitoring pressure within a retaining cuff including a housing having a pressure chamber connected in fluid communication with a fluid pressure source and a fluid communicating connection with the retaining cuff. Associated control circuitry includes a pressure sensor disposable in fluid communication with the pressure chamber and the retaining cuff, via the fluid communicating connection and structured to concurrently determine and monitor pressure within the pressure chamber and the retaining cuff. The control circuitry is cooperatively structured with the pressure sensor and other operative components to establish dynamic multilevel sampling capabilities, calibration parameters stored within the control circuitry prior to use and limited or single use capabilities of the assembly.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: October 18, 2022
    Assignee: Seedlings Life Science Ventures, LLC
    Inventors: Stephen Jay Lowenstein, Keith Rubin, Ken Solovay, Timothy Vandermey, Klaus Lessnau, Michael R. Cole
  • Patent number: 10444196
    Abstract: Bandwidth-selectable acoustic emission apparatus and methods for transmitting time-averaged signal data are described. An example apparatus includes an acoustic emission sensor having a bandwidth-selectable filter and a data extractor. The acoustic emission sensor is to generate an acoustic emission signal. The bandwidth-selectable filter is to filter the acoustic emission signal based on a selected bandwidth to generate a filtered acoustic emission signal. The data extractor is to extract time-averaged signal data from the filtered acoustic emission signal. The data extractor is also to transmit the time-averaged signal data from the acoustic emission sensor to an external data acquisition system.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: October 15, 2019
    Inventor: Bret Anthony Dahme
  • Patent number: 10162673
    Abstract: A controller enables execution of control programs in parallel using a multi-core processor in shorter cycles without causing communication collisions. The controller executes control programs in multiple cycles. In accordance with the priorities assigned to a control program 1 and a control program 2, the controller controls the timing to execute communication associated with the control program 2 without colliding with communication with external devices associated with the control program 1.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: December 25, 2018
    Assignee: OMRON Corporation
    Inventors: Shigenori Sawada, Taishi Kawaguchi, Yasushi Yamawaki
  • Patent number: 9896961
    Abstract: An automated method for resolving fault in an engine is disclosed. The method may include providing a reasoner module for recommending a set of maintenance actions to resolve fault in the engine, inputting steady state performance data from the engine into the reasoner module, and using the reasoner module to recommend a set of maintenance actions based at least in part on the steady state performance data. A fault resolution system for a gas turbine engine is also disclosed. The fault resolution system may include at least one computer processor operatively configured to receive steady state performance data from the gas turbine engine, and recommend a set of maintenance actions to resolve fault in the gas turbine engine based at least in part on the steady state performance data.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: February 20, 2018
    Inventors: Anya R. Brunschwig, Amy Rose Grace, Bryan P. Donovan, Andrew D. Ruestow, Gregory J. Kacprzynski, Charles Pelosi
  • Patent number: 9494492
    Abstract: An automated method for resolving fault in an engine is disclosed. The method may include providing a reasoner module for recommending a set of maintenance actions to resolve fault in the engine, inputting steady state performance data from the engine into the reasoner module, and using the reasoner module to recommend a set of maintenance actions based at least in part on the steady state performance data. A fault resolution system for a gas turbine engine is also disclosed. The fault resolution system may include at least one computer processor operatively configured to receive steady state performance data from the gas turbine engine, and recommend a set of maintenance actions to resolve fault in the gas turbine engine based at least in part on the steady state performance data.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: November 15, 2016
    Inventors: Anya R. Brunschwig, Amy R. Nordmark, Bryan P. Donovan, Andrew D. Ruestow, Gregory J. Kacprzynski, Charles Pelosi
  • Publication number: 20140005805
    Abstract: The system program includes, as an execution control process of the control program, an owner-side start process that starts execution of an owner-side control program; a copy process in which, when execution of the owner-side control program ends, a global variable that is rewritten by the owner-side control program is copied from a global variable area to a synchronous buffer corresponding to the global variable; and a referrer-side start process that starts execution of a referrer-side control program.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 2, 2014
    Inventors: Yoshihide NISHIYAMA, Shigeyuki EGUCHI, Osamu HAMASAKI, Tatsuya KOJIMA
  • Patent number: 8346377
    Abstract: An electronic control apparatus 100A is configured in such a way that a CPU 110A reads the conduction current of an opening/closing device 140n in an IPM 190A, by way of serial-parallel converters 114a and 114b and a second multi-channel A/D converter 116b; the opening/closing device 140n is opening/closing-controlled through a serial control signal SRn or a parallel control signal PWMn; and a reading timing control circuit 170n adjusts the reading timing in such a way that, regardless of the kind of the control signal, reading is performed during the period in which the opening/closing device 140n is driven to be closed. As a result, the serial-parallel converter can reduce the number of wiring leads between the IPM and the microprocessor, and the digital conversion value is accurately read, by adjusting the error between the serial-signal timing and the parallel-signal timing.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: January 1, 2013
    Assignee: Mitsubishi Electric Corp.
    Inventors: Yuji Zushi, Shinsuke Suzuki, Akihiro Ishii
  • Patent number: 8301275
    Abstract: A method and device for controlling a process variable based upon a set point is disclosed. A process variable is measured, and a proportional term is assigned to a manipulated variable that is based upon a product of a proportional gain coefficient and an error magnitude between the process variable and the set point. An integral term is added to the manipulated variable under a first set of conditions, and a derivative term is added to the manipulated variable under a second set of conditions different from the first set of conditions. The sum of the proportional term, the integral term, and the derivative term is output, resulting in the process variable being responsively adjusted thereto.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: October 30, 2012
    Assignee: STI srl
    Inventors: Flavio Tondolo, Roberto Valoti
  • Patent number: 8219220
    Abstract: A multicore processor for industrial control provides for the execution of separate operating systems on the cores under control of one of the cores to tailor the operating system to optimum execution of different applications of industrial control and communication. One core may provide for a reduced instruction set for execution of industrial control programs with the remaining cores providing a general-purpose instruction set.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: July 10, 2012
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Ronald E. Schultz, Scot A. Tutkovics, Richard J. Grgic, James J. Kay, James W. Kenst, Daniel W. Clark
  • Patent number: 8180471
    Abstract: A method for estimating a state of a process implemented by a tool for fabricating workpieces includes collecting metrology data associated with a subset of workpieces processed in the tool. The collecting exhibits an irregular pattern. Metrology data associated with a selected state observation is received for a selected run of the process. A tuning factor for the selected run is determined based on the irregular pattern. The selected state observation is discounted based on the determined tuning factor. A state estimate of the process is determined based on the discounted selected state observation. At least one process tool operable to implement the process is controlled based on the state estimate.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: May 15, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Richard P. Good, J. Broc Stirton, Detlef Pabst
  • Patent number: 8032334
    Abstract: A system for identifying a subset of sensors to sample to reduce the frequency of sensor access. The system determines rise times and records values for the sensors in the system. A time criticality of the sensors is determined based on the rise times. The system processes the sensors by first creating sensor subsets based on one or more constraints on the sensors. The system monitors the values of the sensors in a sensor subset and flags a sensor when it makes a determination that, prior to a next scheduled sampling of the sensor subset, the value of a sensor in the monitored sensor subset will exceed a threshold constraint. The system moves those flagged sensors to a second sensor subset which complies with the sensor's constraints.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 4, 2011
    Assignee: International Business Machines Corporation
    Inventors: Andreas Bieswanger, Michael S. Floyd, Andrew J. Geissler, Soraya Ghiasi, Hye-Young McCreary, Guillermo J. Silva, Malcolm S. Ware
  • Patent number: 8014879
    Abstract: A digital controller includes a sampling component that samples an output signal from a system and an input signal to the system at a first sampling rate, which is at least equal to a predetermined operating rate. An input parameter obtaining component obtains a plurality of input parameters from the samples at the first sampling rate. A decimator component generates subsampled values for the plurality of input parameters at a second sampling rate, which is slower than the first sampling rate. An adaptive plant estimator component generates a model of the system based on the subsampled values. A compensator design component determines compensator parameters based on the model. The compensator parameters reflect changes in the system and are sampled at the second sampling rate. A feedback compensator adjusts the input signal to the system based on the compensator parameters.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 6, 2011
    Assignee: L&L Engineering, LLC
    Inventors: Paul Latham, John C. Canfield
  • Patent number: 7991487
    Abstract: For a plurality of combinations of a plurality of operating states included in an operating range of an engine and for a plurality of combinations of a plurality of objective variables, a system, which calculates design variables, includes a calculating device for obtaining global optimal solutions of the design variables that minimize or maximize a sum of the plurality of objective variables, which respectively correspond to the plurality of combinations of the plurality of operating states; a receiving device for receiving designation of an upper limit or a lower limit of the plurality of objective variables; and a searching device for searching for global optimal solutions that result in the smoothest change in the design variables when changing the operating states in a range of the received upper limit to the received lower limit of the objective variables, with one of the global optimal solutions as an initial value set.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: August 2, 2011
    Assignees: Ono Sokki Co., Ltd., The Doshisha
    Inventors: Yoshihiro Hashimoto, Yuichiro Sampei, Tomoyuki Hiroyasu
  • Patent number: 7979143
    Abstract: A PID controlling apparatus and method for providing a control value to a control object according to the difference between an output value of the control object and a target value are provided, in which an error calculator outputs an error value between the target value and the output value of the control object, a PID operator calculates a proportional value, an integral value, and a derivative value of the error value, calculates the control value using the proportional value, the integral value, and the derivative value, and outputs the control value to the control object, a first sampler samples the output value of the control object a plurality of times with respect to the target value and outputs a sampled output value, and a controller controls the PID operator to repeat a PID operation and output the control value according to a sampling period of the first sampler.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: July 12, 2011
    Assignees: Samsung Electronics Co., Ltd., Seoul National University Industry Foundation
    Inventors: Jun-Mo Koo, Jin-Young Choi, Dong-Hoon Jang, Byung-Kwon Kang, Pyo-Jae Kim, Dong-Sung Song, Hyung-Jin Jang
  • Patent number: 7933666
    Abstract: Systems and methods that can vary a data collection rate via a rate adjustment component, to collect data with different level of granularity. The rate adjustment component can further include an estimation component that can automatically predict a required sampling rate for a stage of an operation, based on statistical models and data collected for similar operations and/or history data. Such difference in the granularity level can initiate in part in response to fault detection, alert triggering, and the like. Accordingly, future trouble shooting efforts can be performed with respect to data that is typically collected at an adjustable rate.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: April 26, 2011
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: John T. Campbell, Robert J. McGreevy, Robert J. Herbst, John J. Baier, Taryl J. Jasper
  • Patent number: 7860584
    Abstract: A method, computer, and recording medium storing a program are provided which, based on local optimal solutions, more efficiently calculate an optimal global optimal solution in a global operating area. System calculates the global optimal solution by solving, using a genetic algorithm based on the local optimal solutions and the initial values, an equation, which should be satisfied by the plurality of design variables, by obtaining the plurality of combinations of design variables composing local optimal solutions for each design variable respectively calculated for each of a plurality of combinations of a plurality of operating states, and by obtaining initial values for the plurality of combinations of design variables used for calculating the global optimal solution.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: December 28, 2010
    Assignees: ONO Sokki Co., Ltd., The Doshisha
    Inventors: Yoshihiro Hashimoto, Yuichiro Sampei, Tomoyuki Hiroyasu
  • Patent number: 7706898
    Abstract: There is described a method and system for using at least one variable of a first automation system in a second automation system, with the variable being made available by the first automation system. An object is to allow a user to program access to a local and remote variable in an identical manner, without having to program special access functions, set up connections and apply a local variable to take up the variable value or to create additional assignment tables and similarly apply the local variable. This object is achieved with a method and system of the type mentioned above, in that an identification feature is used for the unique identification of the variable in the at least second automation system, said identification feature being hierarchically structured and having a system-specific path name and a name for the variable.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: April 27, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Georg Biehler, Wolfgang Füβlein, Lothar Trapp
  • Patent number: 7412459
    Abstract: Handheld CD (compact disc) players are described. In one instance, a handheld CD player includes a CD drive to receive a CD and to determine a CD identification from the CD and a media slot to receive a portable memory card having a database. The handheld CD player also includes an attributes access module configured to retrieve music attributes from the database associated with the CD identification and to store the CD identification in the database if the CD identification is not already in the database.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: August 12, 2008
    Assignee: Microsoft Corporation
    Inventors: Bruce Alan Johnson, William A. Spencer, Anton Phillip Sohn
  • Patent number: 7296103
    Abstract: The present invention is generally directed to various methods and systems for dynamically controlling metrology work in progress. In one illustrative embodiment, the method comprises providing a metrology control unit that is adapted to control metrology work flow to at least one metrology tool, identifying a plurality of wafer lots that are in a metrology queue wherein the wafer lots are intended to be processed in at least one metrology tool, and wherein the metrology control unit selects at least one of the wafer lots for metrology processing in the at least one metrology tool and selects at least one other of the plurality of wafer lots to be removed from the metrology queue based upon the metrology processing of the selected at least one wafer lot in the at least one metrology tool.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: November 13, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Matthew A. Purdy, Cabe W. Nicksic
  • Patent number: 7231266
    Abstract: A digital control device for tracking a sine wave according to the present invention has a compensator, a control object and a feedback gain. An input into the compensator is a signal obtained by subtracting a control quantity from a reference value. An input into the control object is a signal obtained by subtracting an output of the feedback gain from an output of the compensator. A transfer function of the compensator is (k2z+k1)/(z2?2z cos ?T+1), where ? is an angular frequency, T is a sampling period, z is a z operator, and k1 and k2 are constants. Thus, a second-order compensator can be configured, with which a sinusoidal reference waveform can be tracked simply and with high accuracy.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: June 12, 2007
    Inventor: Toshiji Kato
  • Patent number: 7132766
    Abstract: A technique for controlling a switching circuit, such as a relay, includes one or more sensing circuits that generate signals based upon the presence of an actuating object and upon a randomly applied strobe signal. The generated signals are sampled and are used as a basis for determining the state of an output signal. The sensing circuit may generate the signals based upon capacitive coupling with the actuating object. The randomization of the sampling provides enhanced immunity to periodic or cyclic noise. Where more than one sensing circuit is included, the output of the circuits may be considered together for determining the state of the output signal, such as based upon predetermined ranges of signal levels. Signals of the sensing circuit may be sampled in the absence of the strobe to provide an indication of the relative noise level. If the noise level is determined to be elevated, the output signal may not change states.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 7, 2006
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Michael Lee Gasperi, David Dale Brandt, Thong T. Nguyen
  • Patent number: 7076321
    Abstract: The present invention is generally directed to various methods and systems for dynamically adjusting metrology sampling based upon available metrology capacity. In one illustrative embodiment, the method comprises providing a metrology control unit that is adapted to determine a baseline metrology sampling rate for at least one metrology operation, determining available metrology capacity, and providing the determined available metrology capacity to the metrology control unit wherein the metrology control unit determines a new metrology sampling rate based upon the determined available metrology capacity.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: July 11, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Matthew A. Purdy
  • Patent number: 7043340
    Abstract: A protection system for a power distribution system is provided. The protection system includes a central computer, a plurality of data modules, and a data network. The data modules are each in communication with a different circuit breaker of the power distribution system. The data network communicates between the central computer and the plurality of data modules. The central computer sends an instruction to the plurality of data modules over the data network to aid in synchronization of sampling of a power condition at the plurality of data modules.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: May 9, 2006
    Assignee: General Electric Company
    Inventors: Thomas F. Papallo, Indra Purkayastha, Emad Andarawis Andarawis, Ertugrul Berkcan, Scott Charles Evans, Rahul Gore, Mingxiao Jiang, Shobhana Mani, Daniel Lawrence Morrill, Eugene Joseph Orlowski, Jr., Marc Robert Pearlman, William James Premerlani, Ramakrishna Rao, Samantha Rao, Austars Raymond Schnore, Jr., Charles Scott Sealing, Daniel White Sexton, Somashekhar Basavaraj, Terry Michael Topka
  • Patent number: 6922593
    Abstract: A method and apparatus for the control of a system comprising of a plurality of items through the scheduling of actions and the allocation of resources is disclosed. Primary areas of utility include manufacturing systems, city wide vehicle traffic control, multiple project scheduling, communications networks and economic systems. The method and apparatus comprise modeling the parts in such a system as fluid, formulating the control problem as a continuous linear program, using a novel algorithm to solve it, displaying the fluid solution in a meaningful way, and using the fluid solution in the control of the system.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: July 26, 2005
    Inventor: Gideon Weiss
  • Patent number: 6892111
    Abstract: Functional blocks (a numerical control unit 22, servo control unit 26, PLC control unit 24, sizing control unit 23, sampling control unit 25, and display control unit 21) carry out their respective functions of control processing. Numerical control data, PLC control data, and sizing data as details of numerical control processing, PLC control processing, and sizing processing, respectively, are sampled and recorded by sampling control processing. The three kinds of recorded data are displayed together on one display unit 80 by display control processing when a display instruction is given by an operator of a control system 10 through an input control unit 90. Thus, an operator of the control system 10 can carry out the work of tracing the cause of the trouble of a machine tool 70 and of examining efficient machining processes of the machine tool 70 by simultaneously watching the control data displayed on one display unit 80. This provides a control system of the machine tool that can improve workability.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: May 10, 2005
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventor: Yasuji Sakakibara
  • Patent number: 6868294
    Abstract: In the NH3 injection rate control method for an NOx removal apparatus, operating area of the apparatus is divided into first area in which molar ratio of NH3 injection rate with respect to NOx flow rate at an inlet of the apparatus is smaller than molar ratio at minimum point where NOx concentration assumes minimum value and second area in which the molar ratio is equal to or larger than the minimum point molar ratio, and virtual NOx concentration with respect to the molar ratio is set according to virtual characteristic line which varies monotonically to stride across desired operating point without rising with increase of the molar ratio from the first area to the second area. Moreover, feedback control is implemented for adjusting the NH3 injection rate with respect to the NOx flow rate in direction that the virtual NOx concentration is brought close to the desired NOx concentration.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: March 15, 2005
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kouno, Kenji Suzuki, Kazuko Takeshita, Kozo Iida, Toshiyuki Onishi, Akira Hattori
  • Patent number: 6819964
    Abstract: A multivariable process controller controls a chemical, polymer or other physical process. Slow tuning and over-conservative controlled variable values are employed during step testing. While all controlled process variables are within safe limits, only one manipulated variable (MV) at a time is step changed. Several manipulated variables are moved when process variables exceed safe limits to ensure that the controlled process variables return to the safe range, such that suitable MV targets for step testing are able to be automatically discovered within a closed loop control environment. Thus, the step test is able to be conducted mostly unsupervised and/or remotely via a telephone or network connection.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: November 16, 2004
    Assignee: Aspen Technology, Inc.
    Inventor: Magiel J. Harmse
  • Patent number: 6778865
    Abstract: A Method and apparatus for monitoring and controlling appliances and systems having a two-dimensional or multidimensional operating envelope. A map of the operating envelope or of a part of it onto a unit domain or the operating envelope of another appliance is used for monitoring and control. The apparatus produces this map. The method and the apparatus allow monitoring and control which can be carried out substantially in the same way for appliances whose operating envelopes have different shapes.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: August 17, 2004
    Assignee: WINGAS GmbH
    Inventors: Leonid Ostromuhov, Jan Huijnk, Herbert Bauer
  • Patent number: 6760631
    Abstract: A multivariable control method and system suitable for manipulating process variables based on observed changes in controlled objectives without extensive data analysis or involved model development. The method includes operating the process at an initial set of process variables and an initial set of controlled objectives, monitoring the set of process variables and the set of controlled objectives while continuously operating the process, adjusting one or more members of the set of process variables based upon a non-linear optimization with respect to a desired set of controlled objectives, and utilizing the monitored set of process variables and the monitored set of controlled objectives in the non-linear optimization.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: July 6, 2004
    Assignee: General Electric Company
    Inventors: Peter N. Berkowitz, William A. Poe, Paul Burnham Smith
  • Patent number: 6754542
    Abstract: A control arithmetic device includes a subtracting section, disturbance application detecting section, error correction amount calculating section, error correction amount convergence calculating section, and control arithmetic section. The subtracting section calculates the error of a controlled variable on the basis of a controlled variable and set point for a controlled system. The disturbance application detecting section detects, in control cycles, on the basis of the error output whether a disturbance is applied. The error correction amount calculating section calculates an error correction amount on the basis of the magnitude of the error when application of a disturbance is detected. The error correction amount convergence calculating section performs a convergence operation. A control arithmetic method is also presented.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: June 22, 2004
    Assignee: Yamatake Corporation
    Inventor: Masato Tanaka
  • Publication number: 20040107012
    Abstract: Real-time control of a dynamical system is provided by determining control variables that get as close as possible to producing a desired response. Additional consideration of physical limitations leads to a convex Quadratic Program with inequality constraints that needs to be solved in real-time. A new active set algorithm is described to solve the convex Quadratic Program efficiently that meets real-time requirements. Based on the key observation that the physical limitations of the system translate to optimal active sets that remain relatively unchanged over time (even though the actual optimal controls may be varying), starting guesses for the active set obtained from the final iterate in the previous time period greatly reduces the number of iterations and hence allows the Quadratic Programs to be solved to convergence in real-time.
    Type: Application
    Filed: December 2, 2002
    Publication date: June 3, 2004
    Inventors: Indraneel Das, James W. Fuller
  • Publication number: 20040107013
    Abstract: A method of controlling a multivariable system includes the step of receiving a plurality of sensor signals indicating current conditions of the system and receiving a plurality of commands. The desired dynamic response of the system is then determined based upon the commands and the sensor signals. The problem of controlling the system to achieve the desired dynamic response without violating numerous actuator and physical constraints is then formulated as a quadratic programming problem. By solving the quadratic programming problem, the effector commands are determined and the physical constraints are enforced.
    Type: Application
    Filed: December 2, 2002
    Publication date: June 3, 2004
    Inventors: James W. Fuller, Indraneel Das
  • Publication number: 20040049301
    Abstract: Disclosed is an apparatus for preparing and supplying a slurry to a chemical mechanical polishing machine. The slurry contains liquid components at a predetermined mixing ratio. The apparatus includes draw ports for separately drawing therethrough the liquid components, and a discharge port for supplying the slurry to the machine. Feed pumps are arranged on feed lines for the liquid components, respectively, said feed lines extending from the individual draw ports to the discharge port, such that the feed pumps can draw the corresponding liquid components in specific amounts to give the mixing ratio and can deliver the thus-drawn liquid components toward the discharge port, respectively. Dampers and pressurization valves are arranged in combinations on the respective feed lines on delivery sides of the feed pumps. Flowmeters are arranged on downstream sides of the corresponding combinations of the dampers and pressurization valves.
    Type: Application
    Filed: September 5, 2003
    Publication date: March 11, 2004
    Applicant: m FSI LTD.
    Inventor: Masato Kawasaki
  • Patent number: 6671755
    Abstract: A data capture system (1) has modular amplifier circuits (10) connected to modular capture circuits (11) within a rotor 2. Each capture circuit (11) has an FPGA (26) operation according to low-frequency and high-frequency state machines (M1, M2) to control ADCs (25) and upload from memories (30) to a host (15) During sampling, each FPGA (26) runs through a ready mode, a sampling mode, and again a ready mode according to a host command.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: December 30, 2003
    Assignee: Forfàs
    Inventors: Martin J Leahy, Catherine Byrne, Stephen Clothier, Gerard O'Regan, Philip Samways, Jeffrey Punch, Mark Davies
  • Patent number: 6662058
    Abstract: An adaptive predictive expert control system for controlling single-input single-output, or multi-variable time-variant processes with known or unknown parameters and with or without time delay, is disclosed. The adaptive predictive expert control system of the present invention adds an expert block into the operation of previously known adaptive predictive control systems. This expert block based on rules and in the evolution of the process variables, determines and/or modifies the operation of the driver block, control block and adaptive feedback mechanism of the previous art, in order to improve the performance, robustness and stability of the overall control system.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: December 9, 2003
    Inventor: Juan Martín Sanchez
  • Patent number: 6628995
    Abstract: Aircraft flight data collection is enhanced by changing the data sampling rate as a function of an operational condition of the aircraft, such as its flight phase. An algorithm is used to determine the flight phase. Then, the data is collected at a first sampling rate when the flight phase is one of a first set of flight phases and collected at a second sampling rate when the flight phase is one of a second set of flight phases. The second sampling rate is greater than the first sampling rate to maximize the data storage capacity of the system. Generally, the higher sampling rate is used with transient flight phases such as takeoff and thrust reverse.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: September 30, 2003
    Assignee: General Electric Company
    Inventors: Shannon Lee Korson, Bruce Gunter Schings, Packey Pasquale Velleca, Mary Beth Golding
  • Publication number: 20030176932
    Abstract: An apparatus and method for measuring a characteristic of a machine. A variable reluctance sensor (VRS) is coupled to the machine. A first switching device and capacitor, coupled in parallel with the VRS, boosts a variable amplitude of a basic output signal generated by the VRS to increase the signal-to-noise ratio. A control input of the first switching device receives signals, and a modified output signal is generated by the first switching device, having a variable amplitude that is substantially higher than the variable amplitude of the VRS. The modified output signal has an increased signal-to-noise ratio such that machine speed can be more accurately measured during a start-up phase.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 18, 2003
    Inventor: Arthur Wild
  • Patent number: 6591149
    Abstract: In a method for prescribing an essentially linear ramp with a prescribable slope by a quantity, and which is clock-pulse-controlled and which describes the ramp by an increment per clock interval, the ramp is described by a number of regular increments and by at least one first and one second irregular increment. The regular increments exhibit a value corresponding to the prescribable slope. The irregular increments exhibit a value deviating from the prescribable slope. The first irregular increment is a first increment describing the ramp and the second irregular increment is a last increment describing the ramp.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: July 8, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventor: Oliver Heid
  • Patent number: 6571135
    Abstract: For controlling multivariable systems, a control unit for controlling a system with several coupled control variables. The control unit includes controllers (10, 11) having associated control variables (x1, x2) as well as a decoupling network. The decoupling network is connected upstream from the system and includes at least one first decoupling member (12). A first output variable (y1) of a first one of the controllers (10) is routed to the first decoupling member (12). The first decoupling member generates a first correcting quantity (14) for a second output variable (y2) of a second one of the controllers (11). The second controller (11) has a PI- or PID-controller core (40) and is configured such that integrator windup is eliminated when the second output variable (y2) corrected with the first correcting quantity (14) reaches a manipulated variable limit. Bumpless manual/automatic changeover of the controller is also made possible.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: May 27, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stefan Bergold, Madhukar Pandit, Bernd-Markus Pfeiffer
  • Patent number: 6556877
    Abstract: In a data processing system a method and apparatus is provided for discriminating between digital signals of a plurality of different rates by monitoring the pulse width and repetition rate of such signals. The digital signals are continuously monitored to determine whether a single pulse or multiple pulses have been detected within a preselected time period. If only a single pulse or a portion thereof has been detected within the preselected time period a first type of control signal is generated. If multiple pulses or portions of multiple pulses have been detected within the preselected time period a second type of control signal is generated.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: April 29, 2003
    Assignee: International Business Machines Corporation
    Inventor: Bryn R. Owen
  • Patent number: 6532391
    Abstract: A network receiver is configured for receiving a base band carrier signal from another network transceiver via a network medium. A variable gain amplifier generates an amplified base band signal. An A/D converter generates a sequence of sample values representing the base band signal in response to the amplified base band signal. A gain control circuit monitors the sequence of sample values for a plurality of monitoring intervals in a sample time period, determines a range for each monitoring interval, and determines a gain setting for the variable gain amplifier.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: March 11, 2003
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Colin D. Nayler
  • Patent number: 6519496
    Abstract: An apparatus has an input hold circuit for sequentially holding digital feedback signals sequentially transmitted at a sampling period, and for sequentially outputting the transmitted feedback signals or held feedback signals at a period which is shorter than the sampling period; a notch filter for applying a filtering processing to the feedback signals outputted from the input hold circuit; and an output hold circuit for sequentially outputting the feedback signals subjected to the filtering processing by said notch filter, while thinning the same, at a period which is same as the sampling period.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: February 11, 2003
    Assignee: Fujitsu Limited
    Inventors: Takayuki Kawabe, Ichiro Watanabe
  • Publication number: 20030028268
    Abstract: A process plant uses an asset utilization expert to collect data or information pertaining to the assets of the process plant from various sources or functional areas of the plant including, for example, the process control functional areas, the maintenance functional areas and the business systems functional areas. This data and information is stored in a database and is sent to and manipulated in a coordinated manner by tools, such as optimization and modeling tools. This data is also redistributed to other areas or tools where it is used to perform overall better or more optimal control, maintenance and business activities. Information or data may be collected by maintenance functions pertaining to the health, variability, performance or utilization of a device, loop, unit, etc. and this information may then be sent to and displayed to a process operator or maintenance person to inform that person of a current or future problem.
    Type: Application
    Filed: March 1, 2002
    Publication date: February 6, 2003
    Inventors: Evren Eryurek, Trevor D. Schleiss, Stuart Harris
  • Publication number: 20030028267
    Abstract: A system, method, and article of manufacture suitable for determining setpoints of the control variables to optimize the process while taking into account the process-limiting variables in applications where responses are highly non-linear. In a preferred embodiment, the method comprises determining an actual rate of change of a performance limiting process parameter; calculating a predicted rate of change for the performance limiting process parameter for a predetermined future time interval; and adjusting a setpoint for the control variables to optimize the process while taking into account the performance limiting process parameter using the actual rate of change and the predicted rate of change.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 6, 2003
    Inventors: Michael L. Hales, Randy A. Ynchausti, Lynn B. Hales, Kenneth S. Gritton
  • Publication number: 20030018399
    Abstract: An on-line optimizer is provided wherein a boiler (720) is optimized by measuring a select plurality of inputs to the boiler (720) and mapping them through a predetermined relationship that defines a single value representing a spacial relationship in the boiler that is a function of the select inputs. This single value is then optimized with the use of a plant optimizer (818) which provides an optimized value. This optimized value is then processed thought the inverse relationship of the single modified value to provide modified inputs to the plant that can be applied to the plant.
    Type: Application
    Filed: February 25, 2002
    Publication date: January 23, 2003
    Inventors: John P. Havener, Stephen Piche, Donald Semrad, Brian K. Stephenson
  • Publication number: 20020169510
    Abstract: The invention relates to a method for process-variable-dependent identification signal emission for a closed-loop and/or open-loop control program with cyclic sampling of process variables from a technical process. A threshold value crossing time (ts1, ts3) is determined from at least two previous samples (AT1, AT2, AT5-AT7) of a process variable (P). At this time, an identification signal can be triggered, which can call up a single-stage or multi-stage command sequence. The threshold value crossing time (ts1-ts3) can likewise be determined with the aid of a mathematical approximation function and the samples (AT1, AT2, AT5-AT7). A timing mechanism can be started in the predicted sampling cycle (A12 to A89) preceding the threshold value crossing (SD1-SD3) using a time difference (ZD1-ZD3) remaining until the threshold value crossing (SD1-SD3).
    Type: Application
    Filed: August 13, 2001
    Publication date: November 14, 2002
    Inventors: Joachim Ebermann, Kay Grammatke, Horst Stiehler
  • Publication number: 20020133262
    Abstract: The invention is a method of controlling a microstepping motor. The method begins with the initialization of a logic circuit in accordance with the requirements of a profile/index bit generated by a microcontroller. An initial stage is established for the logic circuit and determining whether or not to run the motor in stand-alone or pulse controlled mode. The logic initial stage comprises the initialization of a set of one or more data registers; configuration of interrupts and input/output ports; and, the setting of timer prescales. The method next performs a logic sequence to a motor use profile, a system profile, and a program flow. After completion of the logic sequence, the method performs a step sequence to establish the timing pattern of electrical impulses to be directed to one or more integrated circuits.
    Type: Application
    Filed: December 29, 2000
    Publication date: September 19, 2002
    Inventors: Yanqing Li, Luu T. Pham
  • Publication number: 20020128734
    Abstract: Systems, methods, and apparatus, including computer program apparatus, are described for implementing techniques for processing data from a combinatorial experiment. The techniques include receiving data from a chemical experiment on a library of materials having a plurality of members and generating a representation of the chemical experiment. The representation includes data defining an experiment object having a plurality of properties derived from the chemical experiment. The experiment object is associated with the library of materials. The representation also includes data defining one or more element objects. Each element object is associated with one or more members of the library of materials. A data model and corresponding data structures for describing such experiments are also disclosed.
    Type: Application
    Filed: January 5, 2001
    Publication date: September 12, 2002
    Inventor: David R. Dorsett
  • Patent number: 6415206
    Abstract: A method for determining a minimal set of adjustments for the blades of a rotor supported by a supporting structure for reducing rotation-induced vibration in the supporting structure at at least one harmonic rotation order and/or for reducing track deviation while maintaining structure vibration over at least one harmonic order within an acceptable limit. In one embodiment, a relationship is established by which vibration of the supporting structure may be calculated at harmonic orders of rotor rotation from Fourier coefficients of adjustment, Fourier coefficients of unit vibration influence and Fourier coefficients of vibration measurements. Thereafter, a value is determined for each selected Fourier coefficient of adjustment that provides a desired virtual reduction of vibration of the supporting structure at the harmonic order of the selected Fourier coefficient of adjustment using the vibration relationship.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: July 2, 2002
    Assignee: Simmonds Precision Products, Inc.
    Inventor: C. Samuel Ventres
  • Patent number: 6314329
    Abstract: When a motor vehicle is not in motion, an algorithm for establishing the initial zero point offset values for a yaw rate sensor as may be used in motor vehicle software control systems. The initial values are the manufactured values and are downloaded into the vehicle ECU at the time of the manufacture of the ECU. When the vehicle is waken at the vehicle assembly and the ignition is first turned on, the initial actual value of the zero point offset is stored both as a maximum and minimum value. At subsequent adjusting times when the vehicle is not moving, but the ignition is on, the spread between the maximum and minimum values are checked. If the spread becomes greater than a desired predetermined spread, the value, be it the maximum or minimum value reflects the measured value and the other value is adjusted to be within the desired spread. When the ignition is turned off and the vehicle is not moving, the zero point offset maximum and minimum values are stored in memory.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: November 6, 2001
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Dinu Petre Madau, Behrouz Ashrafi