Patents by Inventor JIH-CHIEH LEE

JIH-CHIEH LEE 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).

  • Method for synchronous control of gantry mechanism with online inertia matching
    Patent number: 11331762
    Abstract: A method for synchronous control of a gantry mechanism with online inertia matching is applicable to a machine tool equipped with a gantry mechanism. The gantry mechanism includes two rails, a crossbeam and a saddle, in which the saddle is disposed on the crossbeam, and the crossbeam is disposed by crossing the two rails. Each of the two rails is furnished with a driving apparatus for synchronously driving the crossbeam, and the driving apparatus includes a drive motor and a lead screw. This method includes the steps of: obtaining gantry-mechanism information; detecting position information of the saddle on the crossbeam; evaluating the position information and the gantry-mechanism information to derive load-inertia variety information; and, evaluating the load-inertia variety information to adjust torque-output information of the drive motor corresponding to the respective driving apparatus.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: May 17, 2022
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Min-Rong Chen, Shih-Chang Liang, Tsung-Yu Yang, Jun-Hong Guo, Jih-Chieh Lee
  • METHOD FOR SYNCHRONOUS CONTROL OF GANTRY MECHANISM WITH ONLINE INERTIA MATCHING
    Publication number: 20210154789
    Abstract: A method for synchronous control of a gantry mechanism with online inertia matching is applicable to a machine tool equipped with a gantry mechanism. The gantry mechanism includes two rails, a crossbeam and a saddle, in which the saddle is disposed on the crossbeam, and the crossbeam is disposed by crossing the two rails. Each of the two rails is furnished with a driving apparatus for synchronously driving the crossbeam, and the driving apparatus includes a drive motor and a lead screw. This method includes the steps of: obtaining gantry-mechanism information; detecting position information of the saddle on the crossbeam; evaluating the position information and the gantry-mechanism information to derive load-inertia variety information; and, evaluating the load-inertia variety information to adjust torque-output information of the drive motor corresponding to the respective driving apparatus.
    Type: Application
    Filed: December 19, 2019
    Publication date: May 27, 2021
    Inventors: MIN-RONG CHEN, SHIH-CHANG LIANG, TSUNG-YU YANG, JUN-HONG GUO, JIH-CHIEH LEE