Electricity: motor control systems inventions 06/08

20080152325 - Apparatus and method for controlling bldc motor: Disclosed are an apparatus and a method of controlling a BLDC motor, including a controller to determine whether the PWM duty of the BLDC motor in driving is desirable, and performing compensation and control processes for the BLDC motor according to the determination result, through a phase voltage measuring scheme,... Agent: Staas & Halsey LLP

20080152326 - Motor positioning unit: A positioning unit including a rotational position detector detecting a rotational position of a motor; a control phase angle generator generating a control phase angle corresponding to the detected rotational position; a rotational speed detector detecting a rotational speed; a position controller calculating a target rotational speed based on a... Agent: Pearne & Gordon LLP

20080152327 - Apparatus and method for controlling motor: An apparatus and method for controlling a motor, which are capable of accurately controlling a speed of the motor regardless of whether an error occurs in a clock circuit of the apparatus. It is possible to accurately control a speed of the motor regardless of a time error of the... Agent: Staas & Halsey LLP

20080138049 - Method and system for low speed control of a video surveillance system motor: The present invention provides a method and system that improve the low-speed control stability of a video camera assembly, including a video camera, a tilt motor operable to tilt the video camera and a pan motor operable to pan the video camera. A first encoder is coupled to one of... Agent: Christopher & Weisberg, P.a.

20080131099 - Electric motor controller with brush position detector: Provided are a method, computer-readable medium, and system for automatically determining a proper operational current input to an electric motor. In an exemplary embodiment, a method for determining the proper operational current input includes sending a test signal to an input of an electric motor. A response to the test... Agent: Foley & Lardner LLP

20080131100 - Fan system and starting method thereof: A fan system includes a connecting device, a controlling device and a fan device. The connecting device includes a first pin receiving at least one driving signal, and a second pin receiving a start signal, wherein a length of the first pin is greater than a length of the second... Agent: Birch Stewart Kolasch & Birch

20080131101 - Fan system and starting method thereof: A fan system includes a connecting device, a controlling device and a fan device. The connecting device has a plurality of pins receiving at least one driving signal and a start signal. The control device is electrically connected to the pins of the connecting device and has a start control... Agent: Birch Stewart Kolasch & Birch