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Class Information
Number: 318/610
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > "reset" systems (p.i.) > With rate (p. i. d.) (e.g., reset windup prevention)
Description: Subject matter in which a third error detector is provided which detects the rate of change of the position and contributes what is termed a "rate" or "differential" control to the system. This rate signal is also summed with the two previous signal to provided a composite system error signal.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8680804 Servo control method and servo control apparatus Mar. 25, 2014
8664901 Method and system for estimating electrical angular speed of a permanent magnet machine Mar. 4, 2014
8653780 Integrated upsampler and filtering for multi-rate controller for electro-mechanical flight actuation system Feb. 18, 2014
8648556 Device for control of a PMSM Feb. 11, 2014
8558534 Rotational angle detection device and electric power steering system Oct. 15, 2013
8508160 Servo motor position control device Aug. 13, 2013
8450962 System for controlling a motor May. 28, 2013
8427093 Controller for actuation system employing Kalman estimator incorporating effect of system structural stiffness Apr. 23, 2013
8344671 Speed controller of magnetic motor Jan. 1, 2013
8314580 Brushless DC-motor Nov. 20, 2012
8314581 Motor spindle control system and method Nov. 20, 2012
8288972 Stage device, method for controlling stage device, exposure apparatus using same, and device manufacturing method Oct. 16, 2012
8255066 Method and apparatus for tuning a PID controller Aug. 28, 2012
8228016 Gain adjustment to improve torque linearity in a field weakening region Jul. 24, 2012
8222851 Machine control device Jul. 17, 2012
8174215 Motor speed controller May. 8, 2012
8159174 Method for adapting controller parameters of a drive to different operating states Apr. 17, 2012
8093855 Low speed control method and apparatus for servo motor Jan. 10, 2012
8076891 Motor controller Dec. 13, 2011
8072175 Semiconductor device for controlling rotation of motor Dec. 6, 2011
8067917 Hysteresis mitigation and control method Nov. 29, 2011
8063602 Stochastic anti-windup proportional-integral (PI) controller Nov. 22, 2011
8040098 Position controller Oct. 18, 2011
8018183 Motor speed controller Sep. 13, 2011
7982424 Document reading apparatus, document reading method, and program for reading document Jul. 19, 2011
7965795 Prevention of integrator wind-up in PI type controllers Jun. 21, 2011
7960936 Methods and apparatus to lock a phase lock loop to a motor Jun. 14, 2011
7956567 Motor drive control device and image forming apparatus Jun. 7, 2011
7956568 Servo motor controller Jun. 7, 2011
7944167 Method and apparatus for improving the position accuracy of a servo motor May. 17, 2011
7915849 Method and system for low speed control of a video surveillance system motor Mar. 29, 2011
7911168 Method and device for controlling motor, and image forming apparatus Mar. 22, 2011
7893647 Arrangement for driving a load element Feb. 22, 2011
7884566 Adaptive servo control system and method Feb. 8, 2011
7847509 System and method for controlling electric motors to simulate a mechanical differential Dec. 7, 2010
7812557 Motor controller, washing machine, and motor control method Oct. 12, 2010
7804267 Correction method for microprocessor-controlled digital regulation Sep. 28, 2010
7759894 Cogless motor driven active user interface haptic feedback system Jul. 20, 2010
7733047 Motor controller and motor control method Jun. 8, 2010
7733041 Method and device for driving rotating-body, process cartridge, image forming apparatus, and computer program product Jun. 8, 2010
7692397 Motor control device and corresponding control method Apr. 6, 2010
7671553 Servo controller Mar. 2, 2010
7642739 Device and method for controlling motor Jan. 5, 2010
7615960 Rotation control device, rotation control method and construction machine Nov. 10, 2009
7589484 Closed loop acceleration control for a data storage device motor Sep. 15, 2009
7542810 System and method for user controllable PID autotuning and associated graphical user interface Jun. 2, 2009
7538512 Integrated control and diagnostics systems May. 26, 2009
7531980 Aircraft cabin pressure controls: duty cycle offset to compensate for asymmetric motor loading in an open-loop motor control system May. 12, 2009
7501786 Stabilizer control apparatus Mar. 10, 2009
7498761 Motor control method and motor control apparatus Mar. 3, 2009

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