Patents by Inventor Lichao Mai

Lichao Mai 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).

  • Vehicle detection and isolation system for detecting spring and stabilizing bar associated degradation and failures
    Patent number: 11305602
    Abstract: A system for testing a suspension system of a vehicle includes an inertial measurement module and a suspension fault detection module. The inertial measurement module is configured to, while the vehicle is not moving, collect sensor data from one or more inertial measurement sensors for different states of the suspension system. The sensor data is indicative of inertial states of the vehicle while the suspension system is in each of the different states. The suspension fault detection module is configured to, based on the sensor data and a set of thresholds, determine whether a fault exists with the suspension system, isolate and identify the fault, and perform a countermeasure based on the detection of the fault.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: April 19, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xinyu Du, Lichao Mai, Brian K. Saylor, Arvind Sharma, Kevin A. Cansiani
  • Suspension fault diagnostics and prognostics using pitch and roll model
    Patent number: 11292307
    Abstract: In various embodiments, methods, systems, and vehicles are provided for determining a fault in a suspension system of a vehicle. In an exemplary embodiment, sensor data is obtained via one or more vehicle sensors during operation of the vehicle; a one or more first coefficients for the vehicle are calculated via a processor using a pitch model with the sensor data; one or more second coefficients for the vehicle are calculated via the processor using a roll model with the sensor data; and a fault in the suspension system is determined via the processor using the first coefficients and the second coefficients.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: April 5, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xinyu Du, Mutasim A. Salman, Lichao Mai, Brian K. Saylor, Kevin A. Cansiani
  • Vehicle Detection and Isolation System for Detecting Spring and Stabilizing Bar Associated Degradation and Failures
    Publication number: 20210129615
    Abstract: A system for testing a suspension system of a vehicle includes an inertial measurement module and a suspension fault detection module. The inertial measurement module is configured to, while the vehicle is not moving, collect sensor data from one or more inertial measurement sensors for different states of the suspension system. The sensor data is indicative of inertial states of the vehicle while the suspension system is in each of the different states. The suspension fault detection module is configured to, based on the sensor data and a set of thresholds, determine whether a fault exists with the suspension system, isolate and identify the fault, and perform a countermeasure based on the detection of the fault.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 6, 2021
    Inventors: Xinyu DU, Lichao MAI, Brian K. SAYLOR, Arvind SHARMA, Kevin A. CANSIANI
  • SUSPENSION FAULT DIAGNOSTICS AND PROGNOSTICS USING PITCH AND ROLL MODEL
    Publication number: 20210086576
    Abstract: In various embodiments, methods, systems, and vehicles are provided for determining a fault in a suspension system of a vehicle. In an exemplary embodiment, sensor data is obtained via one or more vehicle sensors during operation of the vehicle; a one or more first coefficients for the vehicle are calculated via a processor using a pitch model with the sensor data; one or more second coefficients for the vehicle are calculated via the processor using a roll model with the sensor data; and a fault in the suspension system is determined via the processor using the first coefficients and the second coefficients.
    Type: Application
    Filed: September 23, 2019
    Publication date: March 25, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xinyu Du, Mutasim Salman, Lichao Mai, Brian K. Saylor, Kevin A. Cansiani