Electricity: motor control systems inventions 12/08

20080317444 - Motor driving device: A driving device is provided for controlling rotation of a motor. The driving device comprises an inputting module, a comparing module and a processing module. The inputting module includes a first current source, a first voltage source and a first capacitance. The first capacitance is coupled between the first current... Agent: Joe Mckinney Muncy

20080317445 - Motor speed control circuit: A motor speed control circuit includes: a voltage generating circuit configured to output a reference voltage corresponding to a target rotation speed of a motor and a speed voltage corresponding to a rotation speed of the motor, and change either the reference voltage or the speed voltage according to a... Agent: SocalIPLaw Group LLP

20080317446 - Electronic module and arrangement for signal transmission with the former: The invention concerns an electronic module for a motor vehicle, in particular a fan regulator (4″) with a control input (S) for a signal, in particular a pulse width modulated signal, transmitted via a signal line (3). The electronic module is designed for the generation of an essentially constant potential... Agent: Walter A. Hackler, Ph.d. Patent Law Office

20080304815 - Brushless motor control circuit assembly for ceiling fan: A power-saving, high-performance, low-noise brushless motor control circuit assembly is disclosed formed of a power supply circuit, a booster and compensation circuit, a voltage regulator circuit, a microprocessor, a back electromagnetic force sensor, three driver circuits, and three output circuits. By means of detecting back electromagnetic force, the magnetic pole... Agent: Rosenberg, Klein & Lee

20080298784 - Method of sensing speed of electric motors and generators: A method and circuit for determining the speed and/or counting the revolutions of brush and commutator motors is described. The method and circuitry detects signals present on the windings of the motor due to commutation that occurs at the brushes and commutator of the motor. This method can be used... Agent: Mark A. Kastner

20080298785 - Method and system for operating a motor to reduce noise in an electric vehicle: Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one... Agent: General Motors Corporation Legal Staff