Patents by Inventor Ta-Hsu Huang

Ta-Hsu Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Constant-speed control circuit for BLDC motors
    Patent number: 8400095
    Abstract: A speed-control circuit for a BLDC motor is provided. The speed-control circuit includes a pulse generator, a current source circuit, a filter circuit, an error amplification circuit and a PWM circuit. The pulse generator detects a speed signal of the BLDC motor to generate a pulse signal. The filter circuit is coupled to the current source circuit to generate an average signal. The error amplification circuit receives the average signal and a speed-reference signal for generating a speed-control signal. The PWM circuit generates a switching signal to drive the BLDC motor in response to the speed-control signal. A pulse width of the switching signal is determined by the speed-control signal.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: March 19, 2013
    Assignee: System General Corporation
    Inventors: Ta-Yung Yang, Ta-Hsu Huang, Chung-Hui Yeh, Pei-Sheng Tsu, Yi-Min Hsu, Shih-Jen Yang
  • Constant-Speed Control Circuit for BLDC Motors
    Publication number: 20110254498
    Abstract: A speed-control circuit for a BLDC motor is provided. The speed-control circuit includes a pulse generator, a current source circuit, a filter circuit, an error amplification circuit and a PWM circuit. The pulse generator detects a speed signal of the BLDC motor to generate a pulse signal. The filter circuit is coupled to the current source circuit to generate an average signal. The error amplification circuit receives the average signal and a speed-reference signal for generating a speed-control signal. The PWM circuit generates a switching signal to drive the BLDC motor in response to the speed-control signal. A pulse width of the switching signal is determined by the speed-control signal.
    Type: Application
    Filed: July 7, 2010
    Publication date: October 20, 2011
    Applicant: SYSTEM GENERAL CORPORATION
    Inventors: Ta-Yung Yang, Ta-Hsu Huang, Chung-Hui Yeh, Pei-Sheng Tsu, Yi-Min Hsu, Shih-Jen Yang