The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2016
Filed:
Nov. 08, 2011
Rupert Kramer, Friedrichshafen, DE;
Peter Herter, Ravensburg, DE;
Franz Bitzer, Friedrichshafen, DE;
Roland Mair, Tettnang, DE;
Florian Schneider, Lindenberg, DE;
Rupert Kramer, Friedrichshafen, DE;
Peter Herter, Ravensburg, DE;
Franz Bitzer, Friedrichshafen, DE;
Roland Mair, Tettnang, DE;
Florian Schneider, Lindenberg, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method of controlling a pneumatic actuator for actuation of a pneumatically actuated device. The actuator comprises a piston and a pneumatic cylinder, the piston is arranged to move axially within the pneumatic cylinder. The piston is moved as a function of a pressure in a pressure chamber of the pneumatic cylinder, and the pressure in the pressure chamber is adjusted by a control unit which controls at least a valve and/or a pressure regulator and/or a pressure generating device. A pilot control component, for the control, is determined as a function of at least a sliding friction force and/or at least a static friction force of the pneumatic actuator.