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:
Oct. 15, 2019
Filed:
Jun. 23, 2015
Trw Limited, Solihull, West Midlands, GB;
James Owen Patrick Farrelly, Kenilworth, GB;
TRW LIMITED, Solihull, West Midlands, GB;
Abstract
An electric power assisted steering system includes an upper column shaft connected to a steering wheel, a lower column shaft connected to road wheels, a torsion bar interconnecting the upper column shaft and the lower column shaft, and a processor that produces a torque signal indicative of torsion bar torque. An electric motor is connected to the lower column shaft, and a motor position sensor provides a motor position signal dependent on the angular position of the motor rotor that repeats after the motor rotates through an angular range. The processor determines a base motor position at start up by comparing the motor position signal with a signal from a sensor associated with the upper column shaft to determine three candidates and, during subsequent unpowered motion of the steering system rules out two candidates until only one plausible candidate for the base motor position remains.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile