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:
Jan. 18, 2005
Filed:
Jan. 30, 2002
Darrel A. Recker, Ypsilanti, MI (US);
Dale C. Killins, Detroit, MI (US);
Ashraf A. Zeid, Troy, MI (US);
Robert A. Stopper, Jr., Plymouth, MI (US);
Darrel A. Recker, Ypsilanti, MI (US);
Dale C. Killins, Detroit, MI (US);
Ashraf A. Zeid, Troy, MI (US);
Robert A. Stopper, Jr., Plymouth, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
A power steering system includes at least one motor to assist the operator of a vehicle in turning the wheels and steering the vehicle and at least one computer or microprocessor controller. One of the processors adjusts the motor assist torque to reduce the driver effort based on specified requirements defined by boost curves. A second microprocessor controller uses an algorithm to calculate the output of the power steering motor, and compare the relationship between the driver torque and the power assist torque. If the relationship between the two is out of specified bounds, then the power steering assist is deemed inappropriate and the power system may go to a power-off state to assure that the motor does not generate an undesirable torque that has not been requested by the driver.