Electricity: motor control systems inventions 10/08

20080260361 - Method and apparatus for active noise reduction in fans: The present invention provides a method and apparatus for providing power to a fan motor. One embodiment of the apparatus includes a boost regulator configured to provide an output current to a fan motor using an input current provided at an input voltage by a power supply. The fan motor... Agent: Mark W. Sincell Williams, Morgan & Amerson, P.C.

20080260362 - Method and system for operating a motor to avoid selected pulse ratio values: A method and system for operating a motor are provided. Power is provided to the motor through at least one switch operating at a first switching frequency. A pulse ratio of the motor is calculated based on the first switching frequency. The at least one switch is operated at a... Agent: General Motors Corporation Legal Staff

20080260363 - Method of controlling a motorized window treatment: A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload or low-line condition. The motorized window treatment is driven by an electronic drive unit having a motor, a motor drive circuit, and a controller. The controller controls the motor drive... Agent: Lutron Electronics Co., Inc. Mark E. Rose

20080260361 - Method and apparatus for active noise reduction in fans: The present invention provides a method and apparatus for providing power to a fan motor. One embodiment of the apparatus includes a boost regulator configured to provide an output current to a fan motor using an input current provided at an input voltage by a power supply. The fan motor... Agent: Mark W. Sincell Williams, Morgan & Amerson, P.C.

20080260362 - Method and system for operating a motor to avoid selected pulse ratio values: A method and system for operating a motor are provided. Power is provided to the motor through at least one switch operating at a first switching frequency. A pulse ratio of the motor is calculated based on the first switching frequency. The at least one switch is operated at a... Agent: General Motors Corporation Legal Staff

20080260363 - Method of controlling a motorized window treatment: A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload or low-line condition. The motorized window treatment is driven by an electronic drive unit having a motor, a motor drive circuit, and a controller. The controller controls the motor drive... Agent: Lutron Electronics Co., Inc. Mark E. Rose

20080253751 - Method and apparatus for controlling rotational speed of fan: An apparatus for controlling rotational speed of a fan includes a sensor module, a single chip microcomputer (SCM) module, and a driving module. The sensor module collects rotational speed signals of a fan, and converts the rotational speed signals to voltage signals. The SCM module receives the voltage signals from... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang

20080253750 - Protect-control device capable of limiting current for reducing noise resultling from switchover of motor: A protect-control device capable of limiting current for reducing noise resulting from switchover of a motor includes a motor coil set, a driving unit, a sensing unit and a control unit. The motor coil set constituting a motor. The driving unit is electrically connected to the motor coil and provides... Agent: G. Link Co., Ltd.

20080253752 - Method for detecting and controlling output characteristics of a dc motor and a self-propelled apparatus using the same: A method for detecting and controlling output characteristics of a DC motor is provided in the present invention, wherein an input impedance related to the DC motor is measured for analyzing the output characteristics of the DC motor so that the output characteristics of the DC motor is capable being... Agent: Wpat, PC

20080253753 - Brushed motor control with voltage boost for reverse and braking: A single low side power transistor switch is used to efficiently control a brushed motor in a forward rotational direction. A boost voltage power supply is used to supply voltage to the brushed motor in a reverse rotational direction and/or braking from the forward rotational direction. A digital device controls... Agent: Baker Botts L.L.P. Attention: Paul N. Katz

20080247734 - Motor driving circuit: A motor driving circuit drives a motor on receipt of an error signal having a digital value corresponding to a deviation between a current rotation speed of the motor, which is the subject to be driven, and its target value. A digital filter eliminates a high-frequency component of the error... Agent: Cantor Colburn, LLP

20080247735 - Adaptive and reconfigurable system for dc motor control: An integrated circuit for controlling a DC motor is disclosed. The integrated circuit includes at least one digital position and speed circuit (DPS) for providing measurements of speed, position, and direction of the motor, the DPS being in signal communication with the motor for receiving a pair of signals having... Agent: Patent Docket Administrator Lowenstein Sandler PC

20080240688 - Fan controller with duty cycle comparator: A control circuit for a direct current motor is described. In accordance with the principles of the invention, a duty cycle comparator is provided to control the speed of the motor.... Agent: Donald J Lenkszus