Patents by Inventor Mun Shin Chik

Mun Shin Chik 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: 10396554
    Abstract: A method is disclosed for controlling power distribution from a plurality of inverters to one or more loads. The method comprises determining, using one or more computer processors, a plurality of possible combinations of the plurality of inverters to meet load demands corresponding to the one or more loads. Each possible combination of the plurality of possible combinations includes a respective set of one or more inverters of the plurality of inverters. The method further comprises accessing, from a memory coupled with the one or more computer processors, one or more predefined efficiency functions associated with the one or more inverters; selecting, based on the one or more predefined efficiency functions, a combination from the plurality of possible combinations; and transmitting control signals to the set of one or more inverters corresponding to the selected combination to thereby power the one or more loads.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: August 27, 2019
    Assignee: THE BOEING COMPANY
    Inventors: Mun Shin Chik, Lijun Gao, Shengyi Liu
  • Patent number: 10158303
    Abstract: Methods, apparatus, systems and articles of manufacture to perform torque balance control of co-shafted motors are disclosed. An example method includes calculating a first torque value based on first phase currents of a first motor that is driving a shaft connected to a control surface, and calculating a second torque value based on second phase currents of a second motor that is driving the same shaft. The example method also includes determining a first shared torque value based on the first calculated torque value and a first sharing factor, and determining a second shared torque value based on the second calculated torque value and a second sharing factor. The example method also includes determining a torque error based on the first shared torque value and the second shared torque value, and determining a first torque adjustment associated with the first motor based on the torque error.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 18, 2018
    Assignee: The Boeing Company
    Inventors: Mun Shin Chik, Darren Paschedag, Neil Pande, Shengyi Liu
  • Publication number: 20180233908
    Abstract: A method is disclosed for controlling power distribution from a plurality of inverters to one or more loads. The method comprises determining, using one or more computer processors, a plurality of possible combinations of the plurality of inverters to meet load demands corresponding to the one or more loads. Each possible combination of the plurality of possible combinations includes a respective set of one or more inverters of the plurality of inverters. The method further comprises accessing, from a memory coupled with the one or more computer processors, one or more predefined efficiency functions associated with the one or more inverters; selecting, based on the one or more predefined efficiency functions, a combination from the plurality of possible combinations; and transmitting control signals to the set of one or more inverters corresponding to the selected combination to thereby power the one or more loads.
    Type: Application
    Filed: February 13, 2017
    Publication date: August 16, 2018
    Inventors: Mun Shin CHIK, Lijun GAO, Shengyi LIU
  • Publication number: 20180076743
    Abstract: Methods, apparatus, systems and articles of manufacture to perform torque balance control of co-shafted motors are disclosed. An example method includes calculating a first torque value based on first phase currents of a first motor that is driving a shaft connected to a control surface, and calculating a second torque value based on second phase currents of a second motor that is driving the same shaft. The example method also includes determining a first shared torque value based on the first calculated torque value and a first sharing factor, and determining a second shared torque value based on the second calculated torque value and a second sharing factor. The example method also includes determining a torque error based on the first shared torque value and the second shared torque value, and determining a first torque adjustment associated with the first motor based on the torque error.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 15, 2018
    Inventors: Mun Shin Chik, Darren Paschedag, Neil Pande, Shengyi Liu