Patents by Inventor Xiaofan ZENG

Xiaofan ZENG 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 correcting initial zero offset
    Patent number: 10263556
    Abstract: A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle ?1 based on the counter electromotive forces; acquiring a rotation angle ?2 measured by the resolver; calculating an installation deviation ?? corresponding to the space vector phase angle ?1 and the rotation angle ?2; and adjusting a position of the resolver until the installation deviation ?? meets a precision requirement.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 16, 2019
    Assignee: CRRC ZHUZHOU INSTITUTE CO., LTD.
    Inventors: Jianghua Feng, Junfeng Xu, Yuliang Wen, Jing Shang, Jiade Huang, Xiaofan Zeng, Zhaoyang Zhang, Hanfeng Zheng, Xiong Liu, Yaping He
  • METHOD AND SYSTEM FOR CORRECTING INITIAL ZERO OFFSET
    Publication number: 20180302014
    Abstract: A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle ?1 based on the counter electromotive forces; acquiring a rotation angle ?2 measured by the resolver; calculating an installation deviation ?? corresponding to the space vector phase angle ?1 and the rotation angle ?2; and adjusting a position of the resolver until the installation deviation ?? meets a precision requirement.
    Type: Application
    Filed: July 22, 2016
    Publication date: October 18, 2018
    Applicant: CRRC ZHUZHOU INSTITUTE CO., LTD.
    Inventors: Jianghua FENG, Junfeng XU, Yuliang WEN, Jing SHANG, Jiade HUANG, Xiaofan ZENG, Zhaoyang ZHANG, Hanfeng ZHENG, Xiong LIU, Yaping HE