Patents by Inventor Yujia Cui

Yujia Cui 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).

  • Publication number: 20230400845
    Abstract: An industrial system and a method including using a processor, estimating a reliability of a component of an industrial system using a prognostic model program, using the processor, updating weighting vector parameters of the prognostic model program based on collected data and a previous reliability estimate using machine learning, and using the processor, selectively generating a warning based on comparison of the reliability with a threshold and/or deviation of weighting vector parameters.
    Type: Application
    Filed: June 13, 2022
    Publication date: December 14, 2023
    Applicant: Rockwell Automation Technologies, Inc.
    Inventors: Yujia Cui, Jiangang Hu, Rangarajan Tallam, Robert J. Miklosovic
  • Patent number: 11336206
    Abstract: Methods, non-transitory computer readable mediums, and power conversion systems with a controller configured to provide modulated inverter switching control signals at a first switching frequency in response to an inverter current being greater than a first threshold and less than a second threshold, the second threshold being greater than the first threshold. The controller is further configured to provide the inverter switching control signals at a second switching frequency in response to the inverter current being greater than the second threshold, and to provide the inverter switching control signals at a third switching frequency in response to the inverter current being less than the first threshold, where the second switching frequency is less than the first switching frequency and the third switching frequency is greater than the first switching frequency.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: May 17, 2022
    Assignee: Rockwell Automation Technoligies, Inc.
    Inventors: Yujia Cui, Garron K. Morris, Lixiang Wei
  • Publication number: 20220094259
    Abstract: Methods, non-transitory computer readable mediums, and power conversion systems with a controller configured to provide modulated inverter switching control signals at a first switching frequency in response to an inverter current being greater than a first threshold and less than a second threshold, the second threshold being greater than the first threshold. The controller is further configured to provide the inverter switching control signals at a second switching frequency in response to the inverter current being greater than the second threshold, and to provide the inverter switching control signals at a third switching frequency in response to the inverter current being less than the first threshold, where the second switching frequency is less than the first switching frequency and the third switching frequency is greater than the first switching frequency.
    Type: Application
    Filed: September 23, 2020
    Publication date: March 24, 2022
    Applicant: Rockwell Automation Technologies, Inc.
    Inventors: Yujia Cui, Garron K. Morris, Lixiang Wei
  • Patent number: 10158299
    Abstract: A power conversion system, a non-transitory computer readable medium, and a method of operating a power conversion system, in which inverter switching control signals are generated in a first mode according to an inverter carrier signal having an inverter switching frequency, and according to inverter modulation signals, to operate switches of an inverter to provide an AC output signal, and the inverter modulation signals are shifted in a second mode for low modulation index values to reduce common mode voltage.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: December 18, 2018
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Lixiang Wei, Yujia Cui