Abstract: When controlling an air compressor (13) for a pneumatic braking system on a large hybrid commercial vehicle (e.g., a bus, a package delivery truck, etc.), PID control of an air compressor motor (12) is employed during normal system operation such as when the motor shaft is spinning, and state machine control is employed during startup or upon a system disturbance such as a shaft seizure or stall. In this manner, stalling events that occurs due to PID control inability to correct for unexpected disturbances are mitigated by employing state machine control.

Abstract: An adaptive cascade proportional-integral-derivative controller produces a fixed controller output including a fixed proportional-integral-derivative and a fixed feedforward controller command, and an adaptive controller output including an adaptive cascade PID and an adaptive feedforward command all from a reference command. The fixed controller output and the adaptive controller output are added to produce a control command for a controlled system, which provides a measure of an output and a rate of change of the output as feedback for the controller.

Abstract: To accurately control controlled object in a time variant system with a dead time such as a Czochralski method single crystal production device (CZ equipment). The dead time, the time constant, and the process gain value of a controlled object (CZ equipment) (200) are set. The process gain preset value has specified time variant characteristics. An output value y and its first-order and second-order time differentiated values are used as the state variable x of the controlled object (200). A nonlinear state predicting unit (206) predicts a state variable value x(t+Ld) at a future point in time after the dead time, based upon the current output value y, the dead time, the time constant, and the process gain preset value.

Abstract: A flow control system comprises a flow sensor, a valve controller, a signal processor, a control processor and an interface. The flow sensor generates a sensor signal characterizing a flow rate. The valve controller controls the flow rate as a function of a control output. The signal processor converts the sensor signal into a flow signal characterizing the flow rate as a function of time, and the control processor generates the control output as a function of a setpoint and the flow signals. The interface receives an input representative of the setpoint, transmits a flow output representative of the flow signals, and transmits a diagnostic output directly indicative of an operational condition of the flow control system.

Abstract: A work model (or an image) is displayed on an image plane of a robot simulator (201), and a measuring portion and a measuring method are designated (202, 203) and a work shape and a work loading state are designated (204), and then it is judged whether or not the measuring portion and the measuring method are good (205). When the measuring portion and the measuring method are good, a program is generated and the processing is completed (207, 208). When the measuring portion and the measuring method are not good, an alarm is given (206), and the continuation (207) or the repetition (201) of the processing is directed. At the time of analyzing the program, the loading (101), the analysis and display of the measuring portion and the measuring method (102, 103) and the work information (104) are designated, and then it is judged whether or not the measuring portion and the measuring method, which have been analyzed, are good (105).

Abstract: A control method which quickly adjusts a plasma processing apparatus to a desired pressure regardless of gas type, gas flow rate or target pressure simply by optimizing constants. The plasma processing apparatus includes: gas supply means which supplies processing gas to a low pressure processing chamber; plasma generating means which supplies electromagnetic energy to the processing gas in the low pressure processing chamber and generates plasma; exhaust means which exhausts gas in the low pressure processing chamber; gas pressure measuring means which measures gas pressure in the low pressure processing chamber; exhaust speed adjusting means which adjusts exhaust speed of gas to be exhausted by the exhaust means; and an arithmetic and control unit calculates an exhaust speed to make the gas pressure measured by the pressure measuring means equal to a target value, and controls the exhaust speed adjusting means according to the calculation result.

Abstract: Systems and methods for controlling a closed-loop accelerometer system. A system includes an accelerometer with a driver that responds in a nonlinear manner and a rebalancing controller in signal communication with the driver. The rebalancing controller includes a proportional-integral-derivative (PID) control portion having at least one variable gain component. A method includes sensing a movement of a proof mass, determining a static g field based on the sensed movement, setting at least one variable gain component of a PID controller based on the determined static g field, and rebalancing the proof mass using the PID controller.

Abstract: A return fan control system for an HVAC system comprises a supply fan control loop, a return fan control loop and a building pressure control system. The supply fan control loop comprises a duct pressure controller arranged to control a supply fan to a duct pressure setpoint. The return plenum pressure control loop comprises a return plenum pressure controller arranged to automatically control a return fan to a return plenum pressure setpoint determined by a setpoint reset function. The building pressure control system is operable to control a building pressure. The building pressure control system may comprise a building pressure control loop and an outside air control loop cooperatively arranged to control an exhaust damper in response to an outside air intake.

Abstract: A new multiresolution analysis (wavelet) assisted reinforcement learning (RL) based control strategy that can effectively deal with both multiscale disturbances in processes and the lack of process models. The application of wavelet aided RL based controller represents a paradigm shift in the control of large scale stochastic dynamic systems of which the control problem is a subset. The control strategy is termed a WRL-RbR controller. The WRL-RbR controller is tested on a multiple-input-multiple-output (MIMO) Chemical Mechanical Planarization (CMP) process of wafer fabrication for which process model is available. Results show that the RL controller outperforms EWMA based controllers for low autocorrelation. The new controller also performs quite well for strongly autocorrelated processes for which the EWMA controllers are known to fail. Convergence analysis of the new breed of WRL-RbR controller is presented.

Abstract: A computer implemented method for efficiently allocating resources for an enterprise server system through a proportional integral derivative scheme is provided. The method includes defining a set point parameter for a resource being allocated and defining a proportional gain parameter, a proportional integral (PI) gain parameter and a proportional integral derivative (PID) gain parameter in terms of the proportional gain parameter. The method further includes calculating an initial maximum allocation for the resource based on a product of the proportional gain parameter with a difference of an initial operating parameter and the set point parameter and adjusting the initial operating parameter to the initial maximum allocation. A next allocation of the resource is calculated based on a product of the proportional gain parameter with the difference of an initial operating parameter and the set point parameter and a difference of the set point with a current operating parameter.

Abstract: There is realized a control device capable of speeding up an output response without causing deterioration in the resolution of a time-proportional output. The control device controls a control object at a ratio of ON-time to OFF-time for a time-proportional output. The control device comprises a PID computation unit for executing PID computation of deviation between a set value and a measured value from the control object, an integrator for sequentially adding up control output values each representing the result of the PID computation executed by the PID computation unit, an ON/OFF determination unit for determining whether the time-proportional output is turned ON or OFF on the basis of an integrated value of the integrator, and a time-proportional output unit for turning the time-proportional output ON/OFF on the basis of a determination value of the ON/OFF determination unit.

Abstract: A plant controlling system that controls a process value of a plant by operating a plurality of operation targets includes: a velocity-type PID controlling unit to receive a control deviation between the process value and a control set value, and calculate and output a manipulated variable deviation for the operation targets; a switching unit to switch and then output the manipulated variable deviation from the velocity-type PID controlling unit to the operation targets; a plurality of manual operating units, having an integration function, that are associated with the operation targets and output either one of the manipulated variable calculated by the integration of the manipulated variable deviation output from the switching unit and a manipulated variable based on a manually set value to the respective associated operation targets based on a control mode of the operation targets; and a switch controlling unit configured to control operation of the switching unit based on the control mode of the operation

Abstract: A control object model generation device of this invention includes a simulation computing unit (5) which executes simulation of a control system including a controlled system represented by a mathematical model and a controller represented by a controller algorithm, a model control feature amount computing unit (8) which computes a model control feature amount from the simulation result, an evaluation function computing unit (9) which computes an evaluation function value indicating the similarity between a real control feature amount obtained from a control result on an actual controlled system and a model control feature amount, and a controlled system model parameter search computing unit (10) which executes simulation while sequentially changing the values of controlled system model parameters set in the mathematical model, and obtains controlled system model parameters which optimize the evaluation function value.

Abstract: An adaptive process controller performs continuously scheduled process model parameter interpolation to determine a particular set of process model parameters which are used to develop controller tuning parameters for controller tuning. More particularly, a state-based, adaptive PID controller described herein uses a new technique to determine an appropriate process model to be used to perform adaptive tuning over the various operating regions of the plant, and in particular, uses a process model parameter determination technique that enables continuously scheduled process model parameter update over the various plant operating regions or points. The use of this continuously scheduled process model parameter update method provides for smoother transitions between tuning parameters used in the PID controller during adaptive tuning procedures which are implemented based on changes in the operating region or the operating point of the process, thereby providing for better overall control.

Abstract: An integrated digital controller for controlling power electronic devices and method of its use, comprises an analog-to-digital converting scanner module for scanning analog data inputs and used to create digital data correlated with the analog inputs, a loop control module operative to receive the digital data ad used for controlling at least one control loop, and a pulse sequence generator (PSG) module used for generating a variety of fast, configurable, event-driven pulse sequences in cooperation with the PSG and scanner modules. The controller comprises optionally a CPU for managing various tasks and coordinate between the modules, means to create the events, and means for configuration and reconfiguration on-the-fly. The controller is preferably integrated in a semiconductor chip.

Abstract: A method and system for process control configuration changes are described. In one embodiment, a method for switching from a first control algorithm to a second control algorithm in a continuous process control system is described. The method, in the one embodiment, includes executing the first control algorithm, determining to switch from the first control algorithm to the second control algorithm, and executing the second control algorithm. For at least a first execution of the second control algorithm, at least one state variable used in the second control algorithm is adjusted.

Abstract: A method for multi-step temperature control of a substrate includes selecting a first set-point temperature and a second set-point temperature for the substrate, and selecting a first PID parameter set including a first proportional constant KP1, a first integral constant KI1 and a first derivative constant KD1, and selecting a second PID parameter set including a second proportional constant KP2, a second integral constant KI2 and a second derivative constant KD2. The substrate is placed on a substrate holder, the temperature of the substrate is adjusted to the first set-point temperature and the substrate is processed for a first period of time at the first set-point temperature.

Abstract: Described is a method for operating a winding machine used for winding up and/or unwinding a winding material, said winding machine comprising a device for controlling and/or regulating the winding process. A variable value is monitored that concerns a machine state and/or a change in the winding material, and at least one parameter of said controlling and/or regulating device is modified in accordance with the change identified.

Abstract: A computer implemented method of conducting closed-loop control of a physical system comprising the steps of carrying out an initialization of the physical system to commencing closed-loop control, evaluating the optimal constrained control move using the system error and the initial normalized matrix using a control move solver; calculating a first control action by the sum of delta u(0) and the initial control action; and implementing the result to the physical system by converting the control action to an output control signal to effect a change in at least one operating variable.

Abstract: A system and method for controlling a flow of a fluid using an adaptive closed-loop-control algorithm is described. One embodiment includes a method for receiving a set point indicator and/or a sensor indicator generated by a sensor. A response time of a closed-loop-control algorithm is modified when at least one threshold value is satisfied based on the sensor indicator and/or the set point indicator. The closed-loop-control algorithm, which is implemented by a flow controller, is stabilized in response to the modifying of the response time of the closed-loop-control algorithm by adjusting at least one parameter associated with the closed-loop-control algorithm.

Abstract: The invention relates to a method for operating a wind turbine connected to a utility grid during a utility grid disturbance. The method comprises the steps of controlling active current in dependency of the frequency deviation from a reference frequency, and controlling reactive current in dependency of the voltage deviation from a reference voltage. The invention also relates to a wind turbine and wind park.

Abstract: A method is disclosed for developing and using a high-speed adaptive multivariable controller by removing the dynamics of the PID controllers from a Model Predictive Controller that was developed using identification testing of a process. The resulting multivariable controller, based on final control elements as the manipulated variables is then used in a novel control adaptation with all of the PID controllers switched to manual.

Abstract: To estimate the instantaneous electric power consumption of an actuator, such as a heater, with excellent accuracy, while using an existing structure. A control device comprises a PID control calculating unit for calculating, and for outputting to the actuator, an manipulated variable MV based on a produced variable PV of an object to be controlled; and an electric power estimating unit for estimating the electric power consumption of the actuator using an electric power estimating function equation that has been set in advance, using, as input variables, the manipulated variable MV, the produced variable PV, and an electric current value CT of the electric current that flows through the actuator in response to the output of the manipulated variable MV. The electric power estimating function equation is derived in advance through multivariate analysis from actual measured data from the input variables and actual measured data for the electric power consumption of the actuator.

Abstract: A controller with configurable connections between data processing components is provided. In one embodiment, the controller includes a number of configurable inputs and outputs that may be used with digital and/or analog signals. The controller includes a data processor with a plurality of data processing components. The inputs and outputs are configurable to the plurality of data processing components and transfer of processed data between the plurality of data processing components is also configurable.

Abstract: A system for optimizing a power plant includes a chemical loop having an input for receiving an input parameter (270) and an output for outputting an output parameter (280), a control system operably connected to the chemical loop and having a multiple controller part (230) comprising a model-free controller. The control system receives the output parameter (280), optimizes the input parameter (270) based on the received output parameter (280), and outputs an optimized input parameter (270) to the input of the chemical loop to control a process of the chemical loop in an optimized manner.

Abstract: A control strategy for heating, ventilating, and air-conditioning (HVAC) units used to condition the environment in data centers and other commercial buildings such as retail stores with an open-plan design is provided to coordinate the operation of the actuators of the HVAC units. A supervisory controller receives feedback signals from a plurality of environmental sensors and uses a set of references values to determine control signals to the actuators of the HVAC units. A pseudoinverse of a transfer function matrix G may be used to determine the control signals from errors in the feedback signals relative to the reference signals.

Abstract: A control circuit includes a desired value arithmetic unit that calculates a desired value of a control object, a sensor that detects a value indicating a state of an actuator used to displace the control object, a deviation arithmetic unit that calculates a deviation of the control object from the desired value, a proportional arithmetic unit that produces a proportional-component drive signal, an integral arithmetic unit that calculates an integral value of the deviation and produces an integral-component drive signal, a derivative arithmetic unit that calculates a derivative value of the deviation and produces a derivative-component drive signal, and a drive-signal output unit that outputs the drive signals provided from the integral arithmetic unit, the proportional arithmetic unit, and the derivative arithmetic unit to a drive circuit for the actuator. At least the integral gain ki of the integral arithmetic unit is in a range 0.1 V/rad·s?ki?4200 V/rad·s.

Abstract: A digital PID controller controlling a control subject to be in a target state includes: a detector detecting analog data of a current state of the control subject; an AD converter converting the analog data to a digital value; and a digital PID control unit (i) receiving an error value and (ii) digitally performing at least one of integral calculation and derivative calculation to generate a manipulated variable. The digital PID control unit includes at least one of: a first suppression unit suppressing the error value when an absolute value of the error value is equal to or smaller than a first set value; and a second suppression unit suppressing the error value when the absolute value is equal to or smaller than a second set value, and performs the integral calculation and the derivative calculation on the outputs of the first suppression unit and the second suppression unit, respectively.

Abstract: A temperature regulating method in a thermal processing system has heating means for heating an interior of a process chamber to process a substrate, a heating control section for controlling the heating means, and first and second temperature detecting means for detecting a temperature in the process chamber. The first temperature detecting means is arranged in a position closer to the substrate than the second temperature detecting means while the second temperature detecting means is arranged in a position closer to the heating means than the first temperature detecting means.

Abstract: The invention relates to a method and device for transferring signal data from a sender to one or more receivers. The invention includes receiving a quantity as a function of time, arranging the quantity into a first polynomial to obtain values for polynomial coefficients of a first continuous signal, and transferring the values of the polynomial coefficients of the first continuous signal via a first data transfer link to one or more receivers.

Abstract: A method for automatic feedback control and/or monitoring of an oil and/or gas production system, or part(s) thereof, which includes one or more processing unit(s) and/or one or more flow line(s) and/or one or more controls. The method includes measuring or estimating value(s) of at least one level or pressure or flow rate or load indicator associated with at least one of the processing unit(s) and/or flow line(s) and at least one of calculating setting(s) for the controls based on at least one controlled variable in form of the measured or estimated level or pressure or flow rate or load indicator, including compensating for nonlinearities of the control means or estimating at least one of the oil-, gas-, water-, or liquid flow rate(s) into and/or out of at least one of the processing units and/or flow line(s).

Abstract: A system and method for user configuration of an autotuning algorithm for a PID controller. User input is received via a Graphical User Interface (GUI) indicating a desired characteristic of a PID controller, such as stiffness or response time. The system is excited via a proportional controller to characterize the intrinsic behavior of the system, i.e., to calculate a system transfer function. An autotuning algorithm is configured in accordance with the user input. The configured autotuning algorithm is applied to the transfer function to generate gain values for the PID controller resulting in the PID controller characteristic specified by the user. The PID controller gains are loaded into the PID controller hardware or software, thereby configuring the PID controller to operate according to the desired characteristic specified by the user. The user may trigger and view a step response of the system to review the results of the tuning process.

Abstract: A method for controlling a process, wherein the process has an input and an output, and including controlling the input to the process; predicting the output of the process based on a first set of operating parameters; predicting the output of the process based on a second set of operating parameters; updating the first set of operating parameters when a result from predicting the output from the first set of parameters differs from the output of the process by more than a predetermined amount, wherein the predetermined amount is a function the output predicted by the second set of parameters. The invention also includes apparatuses and systems.

Abstract: Linear PID controllers have a transfer function that resembles the frequency response of a notch filter. The PID parameters, KP, KI, and KD (proportional, integral, and derivative gains, respectively) can be extracted from the parameters of a linear notch filter. The linearized modes of scanning probe microscope (SPM) actuators have frequency responses that resemble those of simple second order resonance. Reasonable feedback control can be achieved by an inverse dynamics model of the resonance. A properly parameterized notch filter can cancel the dynamics of a resonance to give good closed-loop response.

Abstract: For a weighting circuit for adjusting a feedback control loop to an input signal of the feedback control loop the feedback control loop comprises a system under control and a device for generating a control difference signal by subtracting a weighted feedback signal from the input signal. The control difference signal is fed to the system under control which generates an output signal. The output signal is multiplied, by means of a weighting circuit by a sequence of multiplication factors for generating the weighted feedback signal. A frequency bandwidth of the feedback control loop is reduced step by step by the sequence of multiplication factors.

Abstract: When an integral calculation of a physical quantity representing a state of a controlled system is performed, two integral calculations, that is, a positive-integral calculation and a negative-integral calculation are performed. In this way, differentiated information can be obtained, depending on the control conditions. A selection of which one of the integral value obtained by the positive-integral calculation and the integral value obtained by the negative-integral calculation is used, is made on the basis of an actual control value and a desired control value when control is performed so that a value representing the state of the controlled system becomes equal to the desired control value. In this way, a control parameter which has been judged to include a phase delay is removed. Thus, the phase delay in the overall control can be suppressed, and an appropriate steering assist control can be performed, for example.

Abstract: The invention relates to a method for adjusting a system that changes in a cycle to a nonconstant cyclic target profile by comparing measured actual values with appropriate target values for the target profile and outputting a control value.

Abstract: A method for controlling a motion of a gas valve in a gas feed line coupling a supply device to a burner is provided. The method includes receiving a signal representative of a user-selected desired level of heat output of the burner, translating the received signal to a first current signal, measuring a second current signal in a conducting medium that is operatively coupled with the valve, deriving a third current signal from the first and second current signals, and providing the third current signal to the conducting medium to control the motion of the valve.

Abstract: When there exists an error between a model considered in feed-forward and an actual device, it is configured so as to enable the application of control having feed-forward such as predictive control without problem to reduce a model error. Furthermore, it is configured to enable more fine adjustment of the actual device by adjusting the balance of gains ? and ?. An operational unit is provided with an error signal calculation unit for outputting an error command and an error feedback value based on a position feed-forward signal and a position detection value, and an error compensation operation unit for controlling so that the error command and the error feedback value coincides with each other. This operational unit is provided at a control operation device.

Abstract: A method for controlling a process variable as it approaches a predetermined value (setpoint) so that the setpoint is not exceeded. The method employs a time domain polynomial equation in a feedback configuration and utilizes a controller that acts as an On/Off controller until the process variable approaches setpoint. As the process variable approaches setpoint, the controller acts as a fast responding analog controller thereby “tailoring” a control variable to precisely bring the process variable to the setpoint without exceeding or overshooting the setpoint.

Abstract: A heat processing apparatus comprises: a reaction vessel; a heating unit disposed in the reaction vessel and configured to heat the processing region; a temperature detection part configured to detect a temperature of the processing region; and a control part configured to control the heating unit by a PID control.

Abstract: Methods for controlling at least two actuators are provided. An internal control system sends an input received from the main control system to a first actuator and diverts a portion of the input to a second actuator when an input constraint of the first actuator is reached. The actuators may be throttle valves for heating a hydraulic line. The internal control system includes a cutoff rerouter for implementing the sending and the diverting of the input and an adaptive cutoff controller, e.g., an integral controller, for determining the input constraint of the first actuator.

Abstract: A scanner system includes a servo control unit. A rotation angle of a rotating shaft supporting a mirror is detected, and an error of the detected value with respect to a commanded value is integrated by an integral compensator so that the detected value is able to track the commanded value. A tracking error proportional compensator is disposed in parallel with the integral compensator so as to add a correction value proportional to the error to the integrated value of the error. A plurality of gains are prepared for each of the integral compensator, the tracking error proportional compensator, a detected value proportional compensator and a detected value differential compensator of the servo control unit. Each gain is changed in accordance with a travel angle of the commanded value. Thus, the mirror can be positioned quickly so that the machining speed can be improved.

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.

Abstract: The present invention provides a method and apparatus for digitally controlling a lighting device which enables a desired lighting device operational set point to be reached in a rapid manner while substantially reducing overshoot and oscillation about the desired lighting device operational set point. In particular the present invention is enabled by a PID controller configured to vary the PID controller parameters based on a relationship based at least in part on the desired lighting device operational set point, the present lighting device operational point or both.

Abstract: Methods, control systems, and information handling systems for controlling at least two actuators are provided. An internal control system sends an input received from the main control system to a first actuator and diverts a portion of the input to a second actuator when an input constraint of the first actuator is reached. The actuators may be throttle valves for heating a hydraulic line. The internal control system includes a cutoff rerouter for implementing the sending and the diverting of the input and an adaptive cutoff controller, e.g., an integral controller, for determining the input constraint of the first actuator. The information handling systems include a determination logic for determining if an input received from the main control system is greater than an input constraint of the first actuator and a diverting logic for diverting a portion of the input to a second actuator when the input is greater.

Abstract: In a control method, when a state quantity serving as a specific reference is defined as a reference state quantity, and a state quantity which is controlled to maintain a relative quantity with respect to the reference state quantity at a specified value is defined as a follow-up state quantity, one of a plurality of control computation input values input to a controller of at least two controllers respectively forming control loops, which controls the follow-up state quantity is transformed, into an internal input value, and the internal input value is input to the controller which controls the follow-up state quantity. At least the two controllers calculate manipulated variables, respectively, and the calculated manipulated variables are output to controlled systems of corresponding control loops.

Abstract: The present invention applies a slope predictive control method to a Variable Temperature Control (VTC) system, measuring the slope of the discharge temperature as a function of flow regulation device position, and using this slope to predict the position of the flow regulation device needed to achieve the desired discharge temperature. The present invention also monitors the response of the VTC over time and utilizes a self-learning algorithm to predict the response time of the system in order to determine when further control adjustments need to be taken.

Abstract: A PID parameter adjustment device includes: a model storage section (1) for storing an equation model to be controlled; a PID controller storage section (2) for storing a control algorithm; a constraint condition storage section (3) for storing a constraint condition for the operation; a simulation operation section (5) for executing simulation of a control system according to the constraint condition; an ideal control result storage section (6) for storing an ideal control response characteristic; an evaluation function operation section (7) for calculating the evaluation function value indicating the closeness between the simulation result and the ideal control response characteristic; and a PID parameter search operation section (8) for executing simulation while modifying the PID parameter and searching a PID parameter at which the evaluation function value is optimal.

Abstract: A method and apparatus for computer modeling the production process is disclosed. An integrated product and process engineering system may be a computer modeling system that models both a generic production process and a specific individual production process. The integrated product and process engineering system may store a time dependent process parameter related to the production process, having uploaded them via an interface. The time dependent process parameters may be retrieve and displayed to the user on a display using a remote function call enabled function module. The time dependent process parameters may be uploaded from an external system or revised using a remote function call enabled function module.