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Class Information
Number: 318/431
Name: Electricity: motive power systems > Motor load, armature current or force control during starting and/or stopping > Initial, "cracking" or "starting from rest" torque control
Description: Subject matter in which means are provided for controlling the motor torque at the instant of starting in order to insure that the motor torque is great enough to overcome the starting-from-rest or static friction opposition to motor movement.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8704469 Torque ripple suppression control apparatus and torque ripple suppression control method for rotating electrical machine Apr. 22, 2014
8674633 Starting time control method and device for IC engine Mar. 18, 2014
8541968 Method for reducing cogging torque effects of an electrical permanent magnet machine Sep. 24, 2013
8432113 Brushless fan motor control circuit assembly Apr. 30, 2013
8401770 Method and device for controlling start time of vehicle heat engine Mar. 19, 2013
8368332 Motor driving circuit Feb. 5, 2013
8350506 Frequency converter start-up Jan. 8, 2013
8102138 Electric power steering apparatus and method of assembling the same Jan. 24, 2012
8054030 Permanent magnet AC motor systems and control algorithm restart methods Nov. 8, 2011
8049446 Motor control device and magnetic pole position estimation precision confirming method Nov. 1, 2011
7965052 Motor driving system and method for starting a motor Jun. 21, 2011
7932688 Cleaner and method for driving the same Apr. 26, 2011
7800328 Fan motor driving circuit Sep. 21, 2010
7723937 Drive control device of motor and a method of start-up May. 25, 2010
7652441 Method and system for starting a sensorless motor Jan. 26, 2010
7638967 Motor control unit Dec. 29, 2009
7595603 Method and device for regulating a pump Sep. 29, 2009
7595601 Electric bolt/nut fastener Sep. 29, 2009
7560885 Method and apparatus for controlling motor Jul. 14, 2009
7477032 Compressor and a driving method thereof Jan. 13, 2009
7368886 Method of testing motor torque integrity in a hybrid electric vehicle May. 6, 2008
7342366 Controller for brushless motor Mar. 11, 2008
7342379 Sensorless control systems and methods for permanent magnet rotating machines Mar. 11, 2008
7339337 Power plant Mar. 4, 2008
7298104 System for electrically regulating the movement transmission device for a motor vehicle Nov. 20, 2007
7294988 Synchronous motor drive unit and a driving method thereof Nov. 13, 2007
7272479 Electrically operated power steering controller and adjusting method of driving electric current offset in this controller Sep. 18, 2007
7265515 Starter for a line start electric motor Sep. 4, 2007
7208893 Motor driving control device to be driven at interval of constant time Apr. 24, 2007
7205737 Systems and methods of monitoring a motor load Apr. 17, 2007
7193387 System and method for motor speed estimation using hybrid model reference adaptive system Mar. 20, 2007
7166978 Motor temperature sensor system and method to determine motor performance Jan. 23, 2007
7161314 Motor control apparatus having current supply phase correction Jan. 9, 2007
7116073 Methods and apparatus for controlling a motor/generator Oct. 3, 2006
7088068 Sensorless motor driving apparatus and driving method addressing prevention of backward rotation Aug. 8, 2006
7071640 Rotation drive control circuit of multiphases direct current motor and the start-up method thereof Jul. 4, 2006
7023158 Motor control apparatus Apr. 4, 2006
7005814 Motor control apparatus having current supply phase correction Feb. 28, 2006
6987373 System and method for starting pump Jan. 17, 2006
6979972 Method and apparatus for detecting a stalled stepper motor Dec. 27, 2005
6917178 Electric actuator system Jul. 12, 2005
6873125 Motor driving apparatus and motor using the same Mar. 29, 2005
6856108 Switched reluctance motor and initial activating method thereof Feb. 15, 2005
6774590 Method for starting an electric brushless rotating machine for driving an internal combustion engine Aug. 10, 2004
6774592 Method and system for controlling a permanent magnet machine Aug. 10, 2004
6737828 Washing machine motor drive device May. 18, 2004
6696804 Electronically commutatable motor comprising an electronic control unit Feb. 24, 2004
6664749 Spindle motor initialization after a control processor reset condition in a disc drive Dec. 16, 2003
6653807 Starter control system for automotive vehicle Nov. 25, 2003
6653811 Switched reluctance motor and method and apparatus for aligning the rotor thereof Nov. 25, 2003

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