Patents by Inventor Yehan Ma

Yehan Ma 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).

  • Network adapted control system
    Patent number: 10969767
    Abstract: A networked control system for controlling at least one plant includes a receiver configured to receive a feedback signal indicative of a current state of a controlled variable of a plant over a wireless link and a controller configured to determine a control command based on a control error between a reference state of the controlled variable and the current state of the control variable. The system also includes a processor configured to determine, based on a function of the control error, a number of transmission times a packet with the control command needs to be transmitted over the wireless link, and a transmitter configured to transmit the packet over the wireless link the number of transmission times.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: April 6, 2021
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Yehan Ma, Yebin Wang, Ankush Chakrabarty, Heejin Ahn, Philip Orlik
  • Network adapted control system
    Patent number: 10809701
    Abstract: A control system for controlling a plant includes a local controller to generate local control commands according to a local control policy to control the plant and a receiver to received remote control commands generated by a remote controller to control the plant according to remote control policy. Local and remote control policies are designed for the same control objective and time resolution such that there is the same Lyapunov function having a negative definite time derivative for controlling the plant according to first or second control policies. The plant is controller with either remote or local control commands in dependence of a success of receiving a remote control command for a time step of the control.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: October 20, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Yebin Wang, Yehan Ma, Philip Orlik, Toshiaki Koike-Akino, Jianlin Guo
  • Network Adapted Control System
    Publication number: 20200218239
    Abstract: A networked control system for controlling at least one plant includes a receiver configured to receive a feedback signal indicative of a current state of a controlled variable of a plant over a wireless link and a controller configured to determine a control command based on a control error between a reference state of the controlled variable and the current state of the control variable. The system also includes a processor configured to determine, based on a function of the control error, a number of transmission times a packet with the control command needs to be transmitted over the wireless link, and a transmitter configured to transmit the packet over the wireless link the number of transmission times.
    Type: Application
    Filed: January 4, 2019
    Publication date: July 9, 2020
    Applicant: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Jianlin Guo, Yehan Ma, Yebin Wang, Ankush Chakrabarty, Heejin Ahn, Philip Orlik
  • Network Adapted Control System
    Publication number: 20200192336
    Abstract: A control system for controlling a plant includes a local controller to generate local control commands according to a local control policy to control the plant and a receiver to received remote control commands generated by a remote controller to control the plant according to remote control policy. Local and remote control policies are designed for the same control objective and time resolution such that there is the same Lyapunov function having a negative definite time derivative for controlling the plant according to first or second control policies. The plant is controller with either remote or local control commands in dependence of a success of receiving a remote control command for a time step of the control.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 18, 2020
    Applicant: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Yebin Wang, Yehan Ma, Philip Orlik, Toshiaki Koike-Akino, Jianlin Guo