Patents by Inventor Wenbin AO

Wenbin AO 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).

  • Method and system for detecting logic level of rotor of motor, and motor
    Patent number: 11533007
    Abstract: A method and a system for detecting a logic level of a rotor of a motor, and a motor are disclosed. The method comprises: obtaining an analog voltage output by a position sensor for a winding of the motor; setting a first commutation voltage and a second commutation voltage; generating a logic level according to the analog voltage, the first commutation voltage and the second commutation voltage; and performing angle correction on the logic level according to a first angle corresponding to the first commutation voltage and a second angle corresponding to the second commutation voltage. The first commutation voltage is a commutation voltage for triggering a rising edge, and the second commutation voltage is a commutation voltage for triggering a falling edge. This method may accurately identify the logic level corresponding to the motor rotor, improve uniformity of a commutation voltage and prevent fluctuations in motor speed.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: December 20, 2022
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Wenbin Ao, Bin Chen, Shengyu Xiao, Wenxian Wu, Yanzhang Wang, Xiaofei Zhang
  • Method and System for Detecting Logic Level of Rotor of Motor, and Motor
    Publication number: 20210226564
    Abstract: A method and a system for detecting a logic level of a rotor of a motor, and a motor are disclosed. The method comprises: obtaining an analog voltage output by a position sensor for a winding of the motor; setting a first commutation voltage and a second commutation voltage; generating a logic level according to the analog voltage, the first commutation voltage and the second commutation voltage; and performing angle correction on the logic level according to a first angle corresponding to the first commutation voltage and a second angle corresponding to the second commutation voltage. The first commutation voltage is a commutation voltage for triggering a rising edge, and the second commutation voltage is a commutation voltage for triggering a falling edge. This method may accurately identify the logic level corresponding to the motor rotor, improve uniformity of a commutation voltage and prevent fluctuations in motor speed.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Inventors: Wenbin AO, Bin CHEN, Shengyu XIAO, Wenxian WU, Yanzhang WANG, Xiaofei ZHANG