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| Number | Title | Issue Date |
| 8055359 | Drive-through transaction system and method A system (10) for carrying out transactions between a customer at a customer station (14, 21, 202, 204) and a service provider at a service provider station (12, 194), includes transferring items through transaction devices such as pneumatic car... | 11/08/2011 |
| 7848830 | Drive-through transaction system and method A system (10) for carrying out transactions between a customer at a customer station (14, 21, 202, 204) and a service provider at a service provider station (12, 194), includes transferring items through transaction devices such as pneumatic car... | 12/07/2010 |
| 7444193 | On-line dynamic advisor from MPC models A method is disclosed for removing the dynamics of the PID controllers from a Model Predictive Controller that was developed using identification testing of a process. This then allows the creation of a very fast final control element based on-line operator advisor ... | 10/28/2008 |
| 7432681 | Scanner system 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 ... | 10/07/2008 |
| 7346403 | Pid parameter adjustment device 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 ... | 03/18/2008 |
| 7200449 | Control system for plant and air-fuel ratio control system for internal combustion engine A control system for a plant, having an identifier and a controller. The identifier identifies model parameters of a controlled object model which is obtained by modeling the plant. The controller calculates a control input to the plant so that an output from the pl... | 04/03/2007 |
| 7184847 | Method and system for controlling a process in a plant A method and system are disclosed for controlling a process by establishing a control factor for a proportional-integral-derivative (PID) controller used to control a parameter of a process relative to a setpoint. A feedback signal regarding the parameter of the pro... | 02/27/2007 |
| 7177710 | System and method for adaptive control of uncertain nonlinear processes A computer system for controlling a nonlinear physical process. The computer system comprises a linear controller and a neural network. The linear controller receives a command signal for control of the nonlinear physical process and a measured output signal from th... | 02/13/2007 |
| 7035695 | Method and apparatus for tuning a PID controller In tuning a controller for a process in a feedback control system, a method is provided for bringing the system into asymmetric self-excited oscillations for measuring the frequency of the oscillations, average over the period value of the process output signal and ... | 04/25/2006 |
| 6970750 | Model-free adaptation of a process controller An adaptive process controller drives a process variable to be substantially equivalent to a set point and adapts the controller gain, the controller reset, and/or the controller rate, based on model free adaptation. The adaptive controller combines a controller gai... | 11/29/2005 |
| 6687553 | Dual gain variable control system A method for controlling a solenoid using a single coil solenoid for both course and fine adjustment. A resistor or series of resistors may be used in parallel/for current controlled solenoids or in series for voltage controlled solenoids for allowing cou... | 02/03/2004 |
| 6684112 | Robust model-free adaptive control A Robust Model-Free Adaptive controller is disclosed for effectively controlling simple to complex systems including industrial processes, equipment, facilities, devices, engines, robots, vehicles, and appliances. Without the need of re-designing a contro... | 01/27/2004 |
| 6658304 | Computer based method and a system for controlling an industrial process A computer based method of controlling an industrial process, including the steps of measuring the values of at least one process variable (y1, y2), and predicting future deviations of one process variable (y1) with reg... | 12/02/2003 |
| 6644332 | Method and apparatus for multiple-input-multiple-output control of a valve/actuator plant A method and apparatus for controlling a valve/actuator plant by generating a plurality of independent correcting control signals each responsive to a plurality of respective input signals and at least one of these input signals being the set point signal... | 11/11/2003 |
| 6619061 | Self-tuning pull-down fuzzy logic temperature control for refrigeration systems A pull-down control algorithm for an HVAC refrigeration system is provided. The control algorithm utilizes a fuzzy logic methodology to automatically adjust a flow of refrigerant in the system during a pull-down to maintain a desired pull-down rate. The d... | 09/16/2003 |
| 6611123 | Servo control apparatus and gain adjusting method A disk apparatus includes a DSP (digital signal processor), and a DSP core of the DSP receives a feedback input from a pick-up, and generates a focus control pulse and a tracking control pulse. That is, a focus servo loop and a tracking servo loop are for... | 08/26/2003 |
| 6571142 | Data processing apparatus, data processing method, and medium A data processing apparatus obtains a prediction coefficient used to predict first data, from second data which has a lower quality than the first data. The apparatus includes a prediction-data extracting section for extracting prediction data used to pre... | 05/27/2003 |
| 6560585 | Procedure for controlling a complex dynamic process A procedure for controlling a complex dynamic process. According to the procedure, information is periodically acquired and values of recorded quantities are generated. The condition and the evolution of the process are described by a succession of detect... | 05/06/2003 |
| 6181976 | Adept data processor implementing function similation with inverse deviation variation weighting A coefficient generator, data processing system and method of data reduction in correspondence with multiple-term parametric relationships, and particularly provides for data reduction in correspondence with approximative descriptions which include multip... | 01/30/2001 |
| 6153998 | Method of controlling a two-degree-of-freedom control system There is provided a method of controlling a two-degree-of-freedom control system for controlling a controlled object. The method includes the steps of generating a first signal for feedforward control using a target value and generating a second signal fo... | 11/28/2000 |
| 5822740 | Adaptive fuzzy controller that modifies membership functions A direct adaptive fuzzy controller having an adaptation mechanism that modifies the locations of output membership functions to improve performance of the fuzzy controller. The controller has a fuzzy rule base that has a different or unique output members... | 10/13/1998 |
| 5812428 | Process controller having non-integrating control function and adaptive bias A process controller controls an integrating-type process based on a measured process variable and a set point. The process controller includes an error generating circuit, a non-integrating control circuit and an adaptive bias circuit. The error generati... | 09/22/1998 |
| 5745362 | Digital PID control apparatus In the digital PID (P:proportional, I:integral, D:derivative) control apparatus of the present invention, in which a deviation is obtained from a controlling amount of an object to be controlled, and a target value, a velocity type PI control operation is... | 04/28/1998 |
| 5745361 | Position control apparatus for machine tool with fuzzy compensator A position control apparatus for a machine tool such as an SMD-mounter which is capable of moving a head to a desired position in as rapid a time as possible, by estimating a moving position of the head according to an evolutionary computation algorithm, ... | 04/28/1998 |
| 5742503 | Use of saturation relay feedback in PID controller tuning A method and an apparatus are provided for autotuning a parameter of a PID controller which is employed in a transfer function. The method includes steps of (a) providing a first specific value for the transfer function; (b) computing a first ultimate par... | 04/21/1998 |
| 5682309 | Feedback method for controlling non-linear processes A system controls a plant process which includes manipulated variables (e.g. input states) and control variables (e.g. output states). The system includes sensor circuitry for providing measures of the control variables and a memory for storing a correcti... | 10/28/1997 |
| 5616998 | Proportional derivitive control system with low speed offset compensation A robot control system generates an offset signal which is added to the control signal for a robot when the velocity error is small. The offset signal is, in each case, based on a previous offset signal added to the then current robot control signal which... | 04/01/1997 |
| 5586444 | Control for commercial refrigeration system A compressor control system for a commercial refrigeration system includes a variable speed compressor and multiple fixed speed compressors. The control system calculates a variable which fluctuates according to the desired capacity of the system and is c... | 12/24/1996 |
| 5528119 | Method and apparatus for phase compensation in a vehicle control system The present invention relates to a method and a device for executing phase compensation in a control system of a motor-driven vehicle, in which the time derivative for an output signal (y) from a circuit (1) contained in the control system is limited rela... | 06/18/1996 |
| 5410890 | Control apparatus of air-conditioner In a control apparatus of an air-conditioner in which a temperature difference between the room temperature and the set temperature is set into an input 1, a time-dependent change in the room temperature is set to an input 2, fuzzy arithmetic operations a... | 05/02/1995 |
| 5335165 | Method and apparatus for adaptive deadtime process control An adaptive PID͌d controller has a proportional derivative section that generates an error signal representing an error in the control signal, particularly, as a function of (i) a time rate of change of the controlled variable signal and (ii) ... | 08/02/1994 |
| 5325288 | Automatic PID controller in which the ratio of the control target value to the control signal is used to optimize performance A control target value xs, a present control signal x(n), and a present operating signal y(n) are input to a first control element which calculates r(n).y(n) where r(n) is the value of the ratio of the control target value to the control signal... | 06/28/1994 |
| 5263333 | Multi-type air conditioner system with optimum control for gaseous flow adjustment valve and liquid expansion valve An outdoor unit has a compressor and an outdoor heat exchanger. Each of a plurality of indoor units has an indoor heat exchanger. The outdoor unit is connected in parallel with the plurality of indoor units to form a multi-type air conditioner system havi... | 11/23/1993 |
| 5248921 | Servo motor control device In a control device for controlling a servo motor driving a robot arm, a target position command signal is input to a first operation section, which generates a speed command value for the speed feedforward. The target position command signal is also inpu... | 09/28/1993 |
| 5245698 | Apparatus for and method of correcting membership functions An apparatus for and a method of creating membership functions for use with fuzzy inference rules in a controller. A control error, which is a difference between a controlled variable obtained from a control object and a target value, is received as an in... | 09/14/1993 |
| 5189620 | Control system for gas turbine helicopter engines and the like A engine control system for helicopters and the like in which free turbine speed is isochronously controlled by a more robust control system having increased bandwidth due to loop architecture and filter implementation accomplished via closed loop control... | 02/23/1993 |
| 5157597 | Method of detecting oscillation of a servo system and automatically adjusting speed loop gain thereof Method for automatically detecting oscillation of a servo system, and for rapidly, correctly and automatically adjusting a speed loop gain thereof. The servo system is operated with the position loop gain set to a large value, to rotate a motor in forward and ... | 10/20/1992 |
| 5124626 | Sinusoidal signal amplitude and phase control for an adaptive feedback control system In a feedback control system, a reference input element adjusts the amplitude and phase of a sinusoidal component of a command signal applied to the control system to cancel the transfer effects of the feedback loop, substantially eliminating error betwee... | 06/23/1992 |
| 5119288 | Controlling apparatus utilized in process instrumentation system A controlling apparatus comprises a portion for calculating a deviation between a process variable from a controlled system and a target value, a first portion for receiving the deviation and executing a velocity-type I controlling calculation to obtain a... | 06/02/1992 |
| 5059880 | Digital control system A digital controller comprising a deviation calculator, a positional P-controlling calculation device, a velocity-type I-controlling calculation device, a signal converter, and an adder unit. The deviation calculator for subtracts a process variable of an... | 10/22/1991 |
