Patents by Inventor Christoph STIEBEL

Christoph STIEBEL 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 and device for controlling a piezoelectric motor
    Patent number: 10326383
    Abstract: A method and device are disclosed for actuating a piezoelectric motor by two driving electrodes by applying periodic control voltages to the driving electrodes. A simplified closed-loop control of the piezoelectric motor is realized by reducing the static friction of a friction contact between a friction element of the piezo-electric motor and an output element to be driven by the friction element without a propulsion of the output element at the same time. In exemplary embodiments, the periodic control voltages are applied with a phase shift to the driving electrodes in a first step of the method, and in a second step of the method, the amplitude ratio of the periodic control voltages is changed with respect to the first step.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: June 18, 2019
    Assignee: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
    Inventors: Christoph Stiebel, Alexej Wischnewski, Dieter Wienecke, Kurt Sinske
  • METHOD AND DEVICE FOR CONTROLLING A PIEZOELECTRIC MOTOR
    Publication number: 20180006583
    Abstract: A method and device are disclosed for actuating a piezoelectric motor by two driving electrodes by applying periodic control voltages to the driving electrodes. A simplified closed-loop control of the piezoelectric motor is realized by reducing the static friction of a friction contact between a friction element of the piezo-electric motor and an output element to be driven by the friction element without a propulsion of the output element at the same time. In exemplary embodiments, the periodic control voltages are applied with a phase shift to the driving electrodes in a first step of the method, and in a second step of the method, the amplitude ratio of the periodic control voltages is changed with respect to the first step.
    Type: Application
    Filed: October 23, 2015
    Publication date: January 4, 2018
    Applicant: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
    Inventors: Christoph STIEBEL, Alexej WISCHNEWSKI, Dieter WIENECKE, Kurt SINSKE