Patents by Inventor Po-Ping CHENG

Po-Ping CHENG 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: 20240132330
    Abstract: Motor control architecture including a travel, a hoist, and a controller is disclosed. The travel disposed on a main rail having an auxiliary-encoder includes a master-driver and a slave-driver for driving two motors. Each motor has a main-encoder. The hoist drives a rope and calculates a rope length continuously. The controller calculates an anti-sway position command based on the rope-length and a position command. The two drivers perform a full closed-loop computation based on a feedback of one main-encoder, a feedback of the auxiliary-encoder, and the anti-sway position command. Wherein, the master-driver controls one motor based on a speed command generated by the full closed-loop computation and the slave-driver follows the speed command and a torque command of the master-driver to drive another motor; or the two drivers compensate the torque command based on an error value between the feedback of one main-encoder and the feedback of the auxiliary-encoder.
    Type: Application
    Filed: October 18, 2023
    Publication date: April 25, 2024
    Inventors: Huan-Chang CHEN, Po-Jen KO, Chun-Ju WU, Lon-Jay CHENG, Wan-Ping CHEN, Chih-Yuan CHANG
  • Publication number: 20090051668
    Abstract: The present invention discloses a touch panel structure comprising: a transparent substrate to carry the components described later; a first conductive layer formed on one side of the transparent substrate and having a plurality of first sensing bands each of which is disposed with at least a first sensing zone and is disposed with a conductive wire on its end to connect with a first electrode layer; an insulated dielectric layer formed on the first conductive layer; and a second conductive layer coated on the insulated dielectric layer and having a plurality of second sensing bands each of which is disposed with at least a second sensing zone and is disposed with a conductive wire on its end to connect with a second electrode layer.
    Type: Application
    Filed: August 25, 2008
    Publication date: February 26, 2009
    Inventor: Po-Ping CHENG