Patents by Inventor Bo Xia XU

Bo Xia XU 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: 9556004
    Abstract: A handrail drive inverter for an escalator can include a memory configured to store instructions, a processor coupled to the memory, an input configured to receive a main speed control signal that corresponds to the speed of a main drive motor of the escalator, and an output configured to provide a handrail speed control signal for a handrail drive motor based on the instructions in the memory. The processor is configured to calculate a torque output of the handrail drive motor and determine the handrail speed control signal as a function of the torque output and a feedback of the handrail speed control signal constrained by at least one of an upper limit and a lower limit, the upper limit and the lower limit being determined from the main speed control signal.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: January 31, 2017
    Assignee: Kone Corporation
    Inventors: Bo Xia Xu, Tai Lai Zhou, Cai Xiao Liang
  • Publication number: 20160152447
    Abstract: A handrail drive inverter for an escalator can include a memory configured to store instructions, a processor coupled to the memory, an input configured to receive a main speed control signal that corresponds to the speed of a main drive motor of the escalator, and an output configured to provide a handrail speed control signal for a handrail drive motor based on the instructions in the memory. The processor is configured to calculate a torque output of the handrail drive motor and determine the handrail speed control signal as a function of the torque output and a feedback of the handrail speed control signal constrained by at least one of an upper limit and a lower limit, the upper limit and the lower limit being determined from the main speed control signal.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Applicant: KONE CORPORATION
    Inventors: Bo Xia XU, Tai Lai ZHOU, Cai Xiao LIANG