Featured patents

Method and Apparatus for Reducing Torque Variation in Motor Drive Systems
US 08836260 B2, Sept. 16, 2014, Electromotive force sensor, David A. Fulton / Remy Technologies, L.L.C. (Pendleton, US)
A method for controlling a specific electric machine, the method comprising:…

Method and System for Determining a Position of a Rotor of an Electric Motor With Noise Reduction
US 08796983 B2, Aug. 5, 2014, Responsive to rotor shaft position or speed, Long Wu et al. / Deere & Company (Moline, US)
A method of determining a position of a rotor in a motor, the method…

Motor Drive Controller and Control Method
US 08872453 B2, Oct. 28, 2014, Comparator circuit or method, Fumihiro Shimizu et al. / Ricoh Company, Ltd. (Tokyo, JP)
A motor drive controller to drive and control a motor that has a rotor…

Control Apparatus for Power Conversion System Including DC/AC Converter Connected Between Electric Rotating Machine and DC Power Source
US 08760096 B2, June 24, 2014, Power supply voltage feature, Hiroya Tsuji et al. / Denso Corporation (Kariya, JP)
A control apparatus for a power conversion system including a DC/AC converter…

Variable Speed Drive System
US 08760089 B2, June 24, 2014, Alternating Current Commutating Motors, Robert C. Smith / Franklin Electric Company, Inc. (Fort Wayne, US)
A fluid displacement system comprising:…

System and Method for Providing Control of an Electric Motor Using Inductive Rotary Sensor
US 08742715 B2, June 3, 2014, "Inductosyn" systems, William L. Kenly, V et al. / Simmonds Precision Products, Inc. (Vergennes, US)
A sensor system for providing commutation control of an electric motor,…

Method and Apparatus for Load Dependent Speed Control of a Motor
US 08669724 B2, March 11, 2014, Control by Patterns or Other Predetermined Schedule Means, Kurtis L. Verheyen et al. / Magnetek, Inc. (Menomonee Falls, US)
A motor drive for controlling rotation of a motor in a material handling system…

Image Forming Apparatus Having Stepping Motor Arranged in Conveying Path for Paper, and Method for Controlling Stepping Motor in Image Forming Apparatus
US 08629643 B2, Jan. 14, 2014, Open-Loop Stepping Motor Control Systems, Yuta Tachibana et al. / Konica Minolta Business Technologies, Inc. (Tokyo, JP)
An image forming apparatus, comprising:…

Method for Control of Synchronous Electrical Motors
US 08552674 B2, Oct. 8, 2013, Sensorless feedback circuit, Blagovest Georgiev Nachev et al.
Method for control of synchronous electrical motor, characterized with this,…

Brushless Synchronous Machine Utilizing Third Harmonic Excitation
US 08450963 B2, May 28, 2013, Synchronous Motor Systems, Thomas A. Lipo / Wisconsin Alumni Research Foundation (Madison, US)
A motor comprising:…

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