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Class Information
Number: 318/632
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > With compensating features
Description: Subject matter in which a compensating means is provided to improve servo performance.










Sub-classes under this class:

Class Number Class Name Patents
318/633 "two-cycle error" compensation 12
318/634 Temperature compensation 75


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Patent Number Title Of Patent Date Issued
8706269 Controller and machining apparatus with position encoder compensation Apr. 22, 2014
8680806 Numerically controlled machine tool and numerical control device Mar. 25, 2014
8674649 High acceleration rotary actuator Mar. 18, 2014
8664907 Fast switching for power inverter Mar. 4, 2014
8659257 Electronic operational control device for a piloting member with cross-monitoring, piloting device and aircraft Feb. 25, 2014
8655555 Openable and closable member control apparatus and vehicle having the same Feb. 18, 2014
8638058 Positioning control device Jan. 28, 2014
8639428 Electromechanical brake system with a failsafe energy supply and method for failsafe energy supply in an electromechanical brake system for vehicles Jan. 28, 2014
8629641 Machine tool to control driving of control objects Jan. 14, 2014
8618764 Calibrating spindle motor controllers Dec. 31, 2013
8564233 Safety system and method for pump and motor Oct. 22, 2013
8541972 Method for suppressing speed ripple by using torque compensator based on activation function Sep. 24, 2013
8536822 Voltage-controlled stepper motor driver Sep. 17, 2013
8525467 Phase delayed active motor damping to mitigate electric vehicle driveline oscillations Sep. 3, 2013
8508171 Position control apparatus Aug. 13, 2013
8493007 Method for ascertaining measured values in a cyclically controlled system Jul. 23, 2013
8493018 Fast switching for power inverter Jul. 23, 2013
8482243 High acceleration rotary actuator Jul. 9, 2013
8482240 Motor drive having integral programmable logic controller Jul. 9, 2013
8482239 Loop gain adjusting circuit Jul. 9, 2013
8436565 Motor controller for tandem control May. 7, 2013
8427094 Method for controlling positioning of actuator comprising wave gear device Apr. 23, 2013
8427093 Controller for actuation system employing Kalman estimator incorporating effect of system structural stiffness Apr. 23, 2013
8410735 Torque ripple suppression control device for permanent magnet motor and electric power steering system Apr. 2, 2013
8400092 Motor drive component verification system and method Mar. 19, 2013
8395341 Repetitive error correction method for disk-drive spindle motor control systems Mar. 12, 2013
8373370 Sensorless control method of high performance permanent magnet synchronous motor during emergency operation Feb. 12, 2013
8344680 Control apparatus of alternating-current motor Jan. 1, 2013
8324848 System for maintaining thermal stability of a motion stage Dec. 4, 2012
8319464 Flux control and one-hundred and eighty degree core systems Nov. 27, 2012
8314585 Methods and systems for eliminating structural modes in a servo mechanism employed to control a flexible structure Nov. 20, 2012
8288972 Stage device, method for controlling stage device, exposure apparatus using same, and device manufacturing method Oct. 16, 2012
8274252 Motor control apparatus Sep. 25, 2012
8237390 Drive unit for legged robots and control method thereof Aug. 7, 2012
8228018 Control system for motor Jul. 24, 2012
8217605 Motor controller for determining a position of a rotor of an AC motor, AC motor system, and method of determining a position of a rotor of an AC motor Jul. 10, 2012
8198844 Motor speed controller Jun. 12, 2012
8198851 Motor controller Jun. 12, 2012
8179077 Frequency converter May. 15, 2012
8174224 Torque production in an electric motor in response to current sensor error May. 8, 2012
8169178 Detection of the angular position of the rotor of a brush motor without using sensors May. 1, 2012
8134325 Controller Mar. 13, 2012
8125173 Control system for a lifting device Feb. 28, 2012
8121733 Kinematic singular point compensation systems Feb. 21, 2012
8120302 Servo control apparatus Feb. 21, 2012
8102137 Method of detecting a useful signal Jan. 24, 2012
8093856 Position control apparatus for numerically controlled machine Jan. 10, 2012
8067918 Servomotor controller for controlling periodic reciprocation Nov. 29, 2011
8058833 Fine resolution motor control Nov. 15, 2011
8018183 Motor speed controller Sep. 13, 2011

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15










 
 
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