Electricity: motor control systems inventions 03/08

20080069547 - Motor control method and motor controller: The present invention provides a motor control method and a motor controller. In the motor control method and the motor controller according to the present invention, even when production tolerance of a motor or a control unit (ECU) or the change of an environment arises, abnormal sound of the motor... Agent: Sughrue-265550

20080069548 - Trigger switch: A trigger switch performs speed control of a motor according to a pull-in amount of a trigger. A wiring path for lead wires connects the trigger switch and an auxiliary device. The wiring path is formed in an insulating wall. The insulating wall isolates a pair of power supply terminals,... Agent: Osha Liang L.L.P.

20080056687 - Control apparatus for vehicle: In a control apparatus for a vehicle having an electric motor for driving the wheels of the vehicle, an electric power source for energizing the electric motor, a motor torque target value calculation unit for controlling the electric power source, and a field current target value calculation unit, the motor... Agent: Crowell & Moring LLP Intellectual Property Group

20080056688 - Drive circuit for a sensored brushless dc motor: A drive circuit for a sensored brushless DC motor, which has a rotably mounted rotor hub, comprises four legs. Each leg has a MOSFET and a diode configured to form four individual nodes. A first primary stator winding is coupled between the first and second nodes, while a second primary... Agent: Renner Kenner Greive Bobak Taylor & Weber

20080056689 - Computer housing temperature control device: A computer housing temperature control device is disclosed. The present invention obtains the PWM signal generated from the CPU in the motherboard to control the rotation speed of all cooling fans located in the computer housing. Furthermore, the present invention uses a hub to share the PWM signal to all... Agent: Rosenberg, Klein & Lee

20080056690 - Motor control device: A motor control device includes: a motor that has a plurality of rotors which respectively have a magnetic piece, which drives or supplementarily drives a vehicle; a phase changing mechanism that changes relative phases of the plurality of rotors, and sets these to a predetermined induced voltage constant; and a... Agent: Arent Fox LLP