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Class Information
Number: 318/652
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > With particular "error-detecting" means > With particular position measuring instruments
Description: Subject matter in which the system includes a particular position measuring instrument.

Sub-classes under this class:

Class Number Class Name Patents
318/670 Contact resistance 3
318/656 Differential transformer systems 27
318/653 Magnetic transducers 137
318/663 Potentiometer systems including autotransformers and wheatstone bridges 110
318/669 Standing wave 2
318/654 Synchro control transmitter-transformer systems 50
318/662 Variable capacitor systems 61

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8692504 Apparatus and methods for determining an initially unknown commutation position of a member moved by a planar motor Apr. 8, 2014
8664898 Device and method of stopping induction motor Mar. 4, 2014
8536813 Motor with rotor-mounted control circuitry Sep. 17, 2013
8525460 Architecture for robust force and impedance control of series elastic actuators Sep. 3, 2013
8510069 Feedback apparatus and feedback method for controlling a servomotor Aug. 13, 2013
8473165 Turning drive control apparatus and construction machine including the same Jun. 25, 2013
8456118 Circuit and method for driving motor Jun. 4, 2013
8456127 Method of obtaining image of disc and apparatus for driving disc Jun. 4, 2013
8410743 Pulse generating device, rotator module, rotational speed control device, and image forming apparatus Apr. 2, 2013
8384332 Integrated gearbox/encoder and control system Feb. 26, 2013
8358097 System and methods for controlling movement of a track light system Jan. 22, 2013
8319467 Manipulator with an external rotor motor Nov. 27, 2012
8207697 Positioning work stop Jun. 26, 2012
8198841 Method and circuit for processing a resolver fault Jun. 12, 2012
8188699 Motor characteristics acquiring apparatus, control apparatus using the acquired motor characteristics, and power window control apparatus May. 29, 2012
8169178 Detection of the angular position of the rotor of a brush motor without using sensors May. 1, 2012
8125173 Control system for a lifting device Feb. 28, 2012
8076892 Stator position adjustment method, motor drive device and stator position adjustment system Dec. 13, 2011
8076888 Method for protecting an electronic device driven by DC motor and circuit for detecting positioning signals thereof Dec. 13, 2011
8076948 Distance measurement with capacitive sensor Dec. 13, 2011
8054029 Calibration method for servo Nov. 8, 2011
8049457 Press machine controller Nov. 1, 2011
8040099 Position device in gantry type of construction Oct. 18, 2011
8004230 Device for controlling a rotary press Aug. 23, 2011
7994749 Multiple-rotation absolute-value encoder of geared motor Aug. 9, 2011
7969114 Motor driving system compatible with different types of encoders Jun. 28, 2011
7888903 Sensor signal estimator and motor controller for stabilization of tracking antenna Feb. 15, 2011
7885743 Electric mirror control device and electric mirror control method Feb. 8, 2011
7868572 Seatbelt apparatus Jan. 11, 2011
7865324 Encoder signal analysis system for high-resolution position measurement Jan. 4, 2011
7852034 Drive method of moving body, stage unit, and exposure apparatus Dec. 14, 2010
7847506 Machine tool controller Dec. 7, 2010
7834576 Apparatus and methods for diagnosing motor-resolver system faults Nov. 16, 2010
7830109 Method of setting the origin of a linear motor Nov. 9, 2010
7816882 Method of protecting an electronic device driven by DC motor and circuit for detecting positioning signals thereof Oct. 19, 2010
7816881 Method and apparatus for utilizing commutation sensors for speed and position control Oct. 19, 2010
7804268 Apparatus and method of controlling injection in electric injection molding machine Sep. 28, 2010
7805270 Encoder signal analysis system for high-resolution position measurement Sep. 28, 2010
7777441 Motor controlling method, motor controlling device, original reading apparatus, and storage medium having program stored thereon Aug. 17, 2010
7769489 Robot control device and robot system Aug. 3, 2010
7764035 Electric actuator for aircraft flight control Jul. 27, 2010
7764033 Motor driving apparatus Jul. 27, 2010
7755315 Rotary linear drive having a transmitter device Jul. 13, 2010
7719219 Wizard for configuring a motor drive system May. 18, 2010
7667424 Servo device Feb. 23, 2010
7638963 Rotary indexing table driven by an induction motor Dec. 29, 2009
7638958 Powered surgical tool with control module that contains a sensor for remotely monitoring the tool power generating unit Dec. 29, 2009
7638960 Positioning device Dec. 29, 2009
7612516 Measuring method and system for CNC machine Nov. 3, 2009
7609012 Motor control apparatus Oct. 27, 2009

1 2 3 4 5

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