Patents by Inventor Reinhard Lehnst

Reinhard Lehnst 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 the continuous control of a position of a control valve
    Patent number: 6820631
    Abstract: A method is for the continuous control of a position of a control valve. A control deviation from a position of the control valve, is determined as a controlled variable, in relation to a reference variable being determined. A manipulated variable is determined from the control deviation, by which manipulated variable the control valve is positioned and/or maintained in the position predefined by the reference variable. The improved method for the control of the position of a control valve, has the effect that failure of a valve position transmitter does not result in failure of the position control loop.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: November 23, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Reinhard Lehnst, Rudolf Schlehuber, Gerta Zimmer
  • Method for the continuous control of a position of a control valve
    Publication number: 20030098070
    Abstract: A method is for the continuous control of a position of a control valve. A control deviation from a position of the control valve, is determined as a controlled variable, in relation to a reference variable being determined. A manipulated variable is determined from the control deviation, by which manipulated variable the control valve is positioned and/or maintained in the position predefined by the reference variable. The improved method for the control of the position of a control valve, has the effect that failure of a valve position transmitter does not result in failure of the position control loop.
    Type: Application
    Filed: November 22, 2002
    Publication date: May 29, 2003
    Inventors: Reinhard Lehnst, Rudolf Schlehuber, Gerta Zimmer