Electricity: motor control systems inventions 10/07

20070248336 - Circuit system and method for operating an electric motor having variable speed from a direct-voltage source: A circuit system and a method for operating an electric motor having variable speed from a direct-voltage source is proposed, in particular for operating a cooling air fan motor of a motor vehicle from the vehicle's electrical system. The circuit system uses pulse-width-modulated input signals that are provided by a... Agent: Kenyon & Kenyon LLP

20070248337 - Real-time responsive motor control system: The present invention discloses a real-time responsive motor control system comprising a central MCU (Microcontroller Unit) core logic and at least one PWM (Pulse Width Modulation) MCU core logic. The central MCU core logic takes care of all interrupt events. The PWM (Pulse Width Modulation) MCU core logic is dedicated... Agent: Rosenberg, Klein & Lee

20070248338 - Motor controlling device for mounting on vehicle: The motor controlling device for mounting on the vehicle to drive the DC brushless motor comprises a main control section (120) for calculating a torque command for the motor, and a current control calculation section (140) constituted by a module or a dedicated LSI independent of the main control section... Agent: Crowell & Moring LLP Intellectual Property Group

20070230925 - Low speed driving control device of dc motor and control method thereof: A low speed driving control device of a DC motor and a control method thereof are provided. The low speed driving control device of a DC motor includes a first speed controller which controls the speed of the DC motor according to a control period, based on a feedback information... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20070230926 - Electrical machine having a series chopper circuit: A controller and a motor assembly having a controller. The controller includes a first switch assembly in a series configuration with the motor, where the first switch assembly has a first transistor, a second switch assembly in a parallel configuration with the motor, where the second switch assembly has a... Agent: Michael Best & Friedrich LLP