Featured patents

Motor Driving Control Apparatus and Method, and Motor Using the Same
US 08829834 B2, Sept. 9, 2014, With separate starting mode or "ramp-up" mode, Joo Yul Ko / Samsung Electro-Mechanics Co., Ltd. (Suwon, Gyunggi-Do, KR)
A motor driving control apparatus comprising:…

System and Method for Current Estimation for Operation of Electric Motors
US 08786244 B2, July 22, 2014, Temperature compensation, Jihoon Jang / GM Global Technology Operations LLC (Detroit, US)
A method, comprising:…

Method for Controlling Permanent Magnet Synchronous Motor
US 08786221 B2, July 22, 2014, Vector control, Young Kook Lee et al. / Hyundai Motor Company (Seoul, KR)
A method for controlling a permanent magnet synchronous motor, the method…

Control Device and Control Method for Power Control Unit
US 08866435 B2, Oct. 21, 2014, Frequency control, Tetsuhiro Itoh et al. / Toyota Jidosha Kabushiki Kaisha (Aichi-ken, JP)
A control device for a power control unit controlling electric power transmitted…

Control Circuit for an Electric Motor Having a Power-Supply Control Device
US 08860354 B2, Oct. 14, 2014, Linear movement motors, Jean-Marc Vaucher et al. / Etel S.A. (Motiers, Swiss Confederation)
A control circuit of an electric motor that has at least one phase, the control…

Motor Driving Circuit
US 08704470 B2, April 22, 2014, Specific processing of feedback signal or circuit therefore, Hiroyuki Ishii et al. / Rohm Co., Ltd. JP
A motor driving circuit configured to receive a Hall signal, which comprises…

Polyphase AC Motor, Driving Device and Driving Method Therefor
US 08664902 B2, March 4, 2014, Torque ripple stabilization or acoustic noise attenuation, Norihisa Iwasaki et al. / Hitachi, Ltd. (Tokyo, JP)
A driving device for a polyphase AC motor having polyphase stator magnetic poles…

Wound Field Synchronous Machine Rotor Tracking Using a Carrier Injection Sensorless Signal and Exciter Current
US 08593095 B2, Nov. 26, 2013, Voltage injection detection, Dhaval Patel et al. / Hamilton Sundstrand Corporation (Windsor Locks, US)
A method of initiating operation of a wound field synchronous machine…

DC Motor Assembly With Step Adjusting Control Arrangement
US 08547049 B2, Oct. 1, 2013, Open-Loop Stepping Motor Control Systems, Xin Wang et al.
A method of controlling a rotational speed of an output shaft of a motorized…

Adjustable Speed Drive Lifetime Improvement Method
US 08471516 B2, June 25, 2013, Pulse-width modulated power input to motor, Richard A. Lukaszewski et al. / Rockwell Automation Technologies, Inc. (Mayfield Heights, US)
A method of operating an inverter, the method comprising:…

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