Patents by Inventor Junjie JIN

Junjie JIN 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).

  • Patent number: 12199509
    Abstract: The present application relates to a bidirectional digital switching power amplifier based on a magnetic suspension drive platform and its multi-step current predictive control method. The control method includes the following steps: establishing a prediction model of a bidirectional digital switching power amplifier; introducing a feedback correction term for a closed loop prediction; calculating an optimal modulation duty cycle through a value function; generating, according to the obtained modulation duty cycle, four PWM drive signals by a pulse width modulation module to control four switch tubes respectively to achieve current prediction control. The present application effectively improves the system control accuracy with small steady-state error, small on-line computation amount, simple algorithm, easy digital realization, and good practical value and application prospect.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: January 14, 2025
    Assignee: SHENYANG UNIVERSITY OF TECHNOLOGY
    Inventors: Feng Sun, Fangchao Xu, Junjie Jin, Gaojie Song, Li Chen, Ming Zhang, Ling Tong, Qiang Li, Xiaoyou Zhang
  • Publication number: 20230208292
    Abstract: The present application relates to a bidirectional digital switching power amplifier based on a magnetic suspension drive platform and its multi-step current predictive control method. The control method includes the following steps: establishing a prediction model of a bidirectional digital switching power amplifier; introducing a feedback correction term for a closed loop prediction; calculating an optimal modulation duty cycle through a value function; generating, according to the obtained modulation duty cycle, four PWM drive signals by a pulse width modulation module to control four switch tubes respectively to achieve current prediction control. The present application effectively improves the system control accuracy with small steady-state error, small on-line computation amount, simple algorithm, easy digital realization, and good practical value and application prospect.
    Type: Application
    Filed: May 19, 2021
    Publication date: June 29, 2023
    Inventors: Feng SUN, Fangchao XU, Junjie JIN, Gaojie SONG, Li CHEN, Ming ZHANG, Ling TONG, Qiang LI, Xiaoyou ZHANG
  • Publication number: 20220274230
    Abstract: Disclosed are a substrate carrying manipulator and a substrate carrying device. The substrate carrying manipulator includes: a bearing frame, having a bearing surface; grabbing assemblies installed on the bearing frame and configured to cooperate with a non-display region of a substrate; and anti-contact assemblies configured to at least provide a gas repulsive force in a direction from the bearing surface to the substrate for a display region of the substrate.
    Type: Application
    Filed: October 18, 2021
    Publication date: September 1, 2022
    Inventors: Xiaogang LIU, Junjie JIN, Jianye SONG