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:
Apr. 03, 2012
Filed:
Apr. 20, 2009
Michael Alan Blommer, Ann Arbor, MI (US);
Paul George Sanders, Milan, MI (US);
Hongtei Eric Tseng, Canton, MI (US);
Dexin Wang, Livonia, MI (US);
Michael Alan Blommer, Ann Arbor, MI (US);
Paul George Sanders, Milan, MI (US);
Hongtei Eric Tseng, Canton, MI (US);
Dexin Wang, Livonia, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A system for decoupling steering rack force disturbances in electric steering may comprise a steering wheel angle sensor, a yaw rate sensor, a lateral acceleration sensor, and a steering torque sensor. The system may also comprise a tire force generator configured to receive signals from the steering wheel angle sensor, the yaw rate sensor, and the lateral acceleration sensor and send a reference rack force to a controller. The system may further comprise a rack force observer configured to receive signals from the steering torque sensor and send an estimated rack force to the controller, wherein the controller is configured to receive signals from the tire force generator and the rack force observer, compare the estimated rack force with the reference rack force to determine a rack force disturbance, and adjust an auxiliary torque based on the rack force disturbance.