Electricity: motor control systems inventions 11/08

20080292290 - Motor control method and apparatus thereof: A motor controlling method and apparatus thereof are provided. The control method includes the steps of receiving a switching phase signal of coil while the motor is rotating, for generating a separate signal, comparing the phase signal and the separate signal to generate a first control signal, generating a current... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20080292291 - Motor control method and device thereof: A motor control method and a motor control device are provided. The control method includes the steps of receiving a current feedback signal from a coil switching circuit, while the motor is rotating, for generating a separate signal, and comparing the current feedback signal and the separate signal for generating... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20080292292 - Device and method for controlling brushless dc electric machine: A controller of a brushless DC electric machine having a rotor and at least a stator winding powered by a driving voltage is provided. The controller includes a position sensor, an advance angle control circuit, and a driving circuit. The position sensor is moved along a reverse rotating direction of... Agent: Volpe And Koenig, P.C.

20080273865 - Noise suppresion suppression for hall sensor arrangements: A method and apparatus is provided for processing signals from a Hall effect device arrangement coupled to a monolithic brushless DC motor where the motor is driven by a PWM circuit providing PWM drive signals.... Agent: Donald J Lenkszus