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Class Information
Number: 318/271
Name: Electricity: motive power systems > Plural diverse motor controls > Running-speed control > With acceleration control
Description: Subject matter in which means are also provided for controlling the acceleration of the motor.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8264176 Fan arrangement Sep. 11, 2012
8044616 Method and apparatus for initializing operation of a disk drive Oct. 25, 2011
8004223 Wheel driving apparatus and electric vehicle including the same Aug. 23, 2011
7945985 Windscreen wiper device, particularly for a motor vehicle May. 24, 2011
7619379 Motor control device and setting method thereof Nov. 17, 2009
7589488 Motor control apparatus Sep. 15, 2009
7579796 Controller for a multi-phase brushless DC motor Aug. 25, 2009
7468590 Method and apparatus for initializing operation of a disk drive Dec. 23, 2008
7400103 Controller for a multi-phase brushless DC motor Jul. 15, 2008
7332883 Method and apparatus for initializing operation of a disk drive Feb. 19, 2008
7253580 Method and apparatus for adaptive motor speed control Aug. 7, 2007
7141946 Method and apparatus for providing optimal acceleration feedback Nov. 28, 2006
7102309 Apparatus for compensating for speed error of motor Sep. 5, 2006
7091685 Overload protection for DC motors Aug. 15, 2006
7061194 Method and apparatus for controlling constant linear velocity of spindle motor using mirror signal Jun. 13, 2006
6915538 Smooth start system for power chair Jul. 12, 2005
6836087 Multiphase motor voltage control for phase windings of different wire gauges and winding turns Dec. 28, 2004
6828747 Electric actuator and method of controlling the same Dec. 7, 2004
6822411 Method and apparatus for controlling motors Nov. 23, 2004
6696804 Electronically commutatable motor comprising an electronic control unit Feb. 24, 2004
6538412 Method for controlling a power drive system Mar. 25, 2003
6275348 Magnetic tape apparatus and method Aug. 14, 2001
6232737 Method of detecting, diagnosing and automatically correcting abnormalities in servo control system May. 15, 2001
5877955 Transducerless position determining system and method for the same Mar. 2, 1999
5825150 Method of detecting, diagnosing and automatically correcting abnormalities in servo control system Oct. 20, 1998
5824975 Speed control apparatus for compensating vibration of elevator Oct. 20, 1998
5808429 Method of and apparatus for controlling motor Sep. 15, 1998
5808431 Motor rotational speed control apparatus Sep. 15, 1998
5761376 System and method of motor control Jun. 2, 1998
5726544 Speed control apparatus and method for electric car Mar. 10, 1998
5587635 Robot control apparatus for monitoring load on robot Dec. 24, 1996
5559408 Apparatus for controlling a motor using piezoelectric resistance Sep. 24, 1996
5510683 Motor speed control device Apr. 23, 1996
4746846 Direct current motor control, and uses to measure force, and with a physical exercise device May. 24, 1988
4673852 Device for the electric low-voltage driving of a rotatable mass having high inertia and a motor which is part of said device Jun. 16, 1987
4656403 Digital speed control circuit for a DC motor Apr. 7, 1987
4649328 Method for automatic speed loop tune-up in a machine drive Mar. 10, 1987
4648473 Speed control for an electric golf car Mar. 10, 1987
4549121 Motor minimum speed start-up circuit for electric motors Oct. 22, 1985
4494056 Motor driving circuit Jan. 15, 1985
4493398 Drive control for a transportation system, especially an elevator Jan. 15, 1985
4449082 Motor speed control system May. 15, 1984
4430605 Motor control system utilizing switched controller Feb. 7, 1984
4332208 Sewing machine speed control circuit Jun. 1, 1982
4305026 Device for driving a DC motor with feedback control Dec. 8, 1981
4300079 DC Motor control system Nov. 10, 1981
4232257 Web transport capstan control system Nov. 4, 1980
4226546 Printer control system Oct. 7, 1980
4109190 Circuit for increasing the operating speed range of a velocity servo system Aug. 22, 1978
4097788 Control circuit for a self-starting electric motor Jun. 27, 1978

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