Featured patents

Parameter Estimating Apparatus for Permanent Magnet Synchronous Motor Driving System
US 08829831 B2, Sept. 9, 2014, Vector control, An No Yoo / LSIS Co., Ltd. (Anyang-Si, Gyeonggi-Do, KR)
A parameter estimating apparatus for permanent magnet synchronous motor driving…

Induction Motor Driver
US 08779711 B2, July 15, 2014, Constant Motor Current, Load Torque Control, Yang Liu / Princeton Power Systems, Inc. (Lawrenceville, US)
A method for controlling the speed of an induction motor including a rotor, said…

Method of Reducing the Effect of Preheat Time Variation During Shape Memory Alloy Actuation
US 08766564 B2, July 1, 2014, Thermoelectric motor, Nancy L. Johnson et al. / GM Global Technology Operations LLC (Detroit, US)
A method of activating a shape memory alloy (SMA) actuator, comprising the steps…

Motor Controller With Drive-Signal Conditioning
US 08754602 B2, June 17, 2014, Torque ripple stabilization or acoustic noise attenuation, Ezio Galbiati et al. / STMicroelectronics, Inc. (Coppell, US)
A motor controller, comprising:…

Method for Controlling an Electric Cylinder and a Control System for the Electric Cylinder
US 08749180 B2, June 10, 2014, Linear-Movement Motors, Yoichiro Shirai et al. / Sintokogio, Ltd. (Nagoya, JP)
A method for controlling an electric cylinder in a device, wherein…

Substrate Processing Apparatus With Motors Integral to Chamber Walls
US 08680803 B2, March 25, 2014, Including end effector, Christopher Hofmeister et al. / Brooks Automation, Inc. (Chelmsford, US)
A substrate processing apparatus comprising:…

Single Power Supply Dual Converter Open-Winding Machine Drive
US 08648562 B2, Feb. 11, 2014, With impedance control, Thomas A. Lipo
An apparatus for improving machine drive performance comprising:…

Energy Converter
US 08575878 B2, Nov. 5, 2013, Reciprocating or oscillating electromagnetic means, Tetsuo Sekiya et al. / TBK Co., Ltd (Tokyo, JP)
An energy converter, comprising…

Limiting Peak Electrical Power Drawn by Mining Excavators
US 08536814 B2, Sept. 17, 2013, Having Plural, Diverse or Diversely Controlled Sources, Walter Köllner et al. / Siemens Industry, Inc. (Alpharetta, US)
A method for transferring electrical power, the method comprising:…

Direct Current Motor
US 08519647 B2, Aug. 27, 2013, Reversing polarity of current supplied to armature circuit, Wei Bao et al. / T-Max (Hang Zhou) Industrial Co., Ltd. (Hangzhou, CN
An armature-and-exciter-windings series DC motor comprising:…

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