Electricity: motor control systems inventions 06/07

20070147805 - Control device and method of motor detailed description of the invention: A control device for controlling a motor includes a sensing module, a modifying module and a driving module. The sensing module senses the motor to generate a sensing signal. The modifying module receives the sensing signal and generates a phase modifying signal according to the sensing signal. The driving module... Agent: Birch Stewart Kolasch & Birch

20070147806 - Surgical machine and method for operating a surgical machine: To improve a surgical machine with an electric motor comprising a rotor and a plurality of motor windings, and with a motor controller for controlling and/or regulating the electric motor so that, in particular, the efficiency of the electric motor can be optimized essentially over the entire rotational speed range,... Agent: Lipsitz & Mcallister, LLC

20070147807 - Control unit: A control unit for an electric motor of an actuator. The control unit including a controller, a capacitive energy storage device having a charge voltage, a temperature sensor to measure an ambient temperature, and a charge converter.... Agent: Barnes & Thornburg LLP

20070140669 - Method and device for determining the rotary speed of an electrical machine: A method for determining the rotary speed of an electrical machine, especially of a direct current motor, which is controlled in PWM operation, the tracking voltage of the electrical machine being measured and the rotary speed being ascertained from that. The rotary speed fluctuations are able to be substantially reduced... Agent: Kenyon & Kenyon LLP

20070140670 - Power supply system and method for powering a vehicle: A power supply system and method for powering a vehicle are provided that reduce or eliminate the need for a low voltage power storage unit. The system and method are configured to use power from a high voltage storage unit to support low voltage loads, including the load created by... Agent: Brooks Kushman P.C./fgtl

20070133955 - Fan speed control circuit simultaneously controlled by temperature and pwm: A speed control circuit of a fan motor simultaneously controlled by temperature and PWM signals is provided. The PWM signals are received by a PWM control circuit, which sends a PWM control signal based on duty cycles of the PWM signals to a temperature detecting circuit. The temperature detecting circuit... Agent: Hdsl

20070133956 - Fan speed control device and method detailed description of the invention: A fan speed control device includes a controller, a switch and a voltage regulator. The controller detects a rotation speed signal of the fan to generate a first driving signal when the rotation speed signal is relatively higher than a predetermined rotation speed signal and generates the first driving signal... Agent: Birch Stewart Kolasch & Birch

20070133957 - Method of controlling speed of bldc motor and method of controlling cooling speed of refrigerator using the same: A method of controlling the speed of a BLDC (brushless direct current) motor and a method of controlling the cooling speed of a refrigerator using the same. A method of controlling the speed of a BLDC motor includes: inputting a driving signal having a predetermined reference current applying angle to... Agent: Staas & Halsey LLP

20070133958 - Adjustment device and method for operation of a final control element: An adjustment device as well as a corresponding method for operation of the final control element in a motor vehicle are specified. In this case, a motor is provided for operation of the final control element, a sensor element is provided for detection of a parameter that characterizes the motor... Agent: White & Case LLP Patent Department