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. 13, 2004
Filed:
May. 21, 2002
Muqtada Husain, Brownstown, MI (US);
Benrouz Ashrafi, Dearborn, MI (US);
Gregory Stout, Ann Arbor, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
The present invention includes a system and a method for generating steering reaction torque in a steer-by-wire steering system. The system includes a manually steerable member; a feedback generator; a vehicle speed sensor; a steering position sensor; and a steering actuator load sensor. A control unit calculates a set of blended reaction torque values by receiving input signals from the steering position sensor and the steering actuator load sensor. The control unit operates on the input signals and computing a set of reaction torque values, and blending the reaction torque values into set of blended reaction torque values. The set of reaction torque equations comprises a plurality of non-linear functions that is adapted for real-time, continuous operation upon the input signals from the sensors. The set of blended reaction torque values is speed-sensitized based on vehicle speed and transmitted to the feedback generator to generate steering feel in the manually steerable member.