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:
Mar. 18, 2025
Filed:
Dec. 01, 2022
Zf Automotive Uk Limited, Solihull, GB;
Aleksejs Semjonovs, Birmingham, GB;
ZF Automotive UK Limited, West Midlands, GB;
Abstract
A steer-by-wire steering system for a vehicle comprises: a rotatable steering shaft; a driver-operated steering input member connected to the steering shaft; and first and second torque feedback motors having output shafts connected to the steering shaft and each being operable to apply either a feedback torque or an offset torque to the steering shaft. The system further comprises: an angular position measuring arrangement for measuring the angular position of the steering shaft; an angular acceleration determination arrangement for determining the angular acceleration of the steering shaft; an envelope determination arrangement for establishing or determining an envelope of the measured or calculated angular acceleration of the steering shaft; a magnitude determination arrangement for determining the magnitude of the offset torque to be applied by the motors as a function of the envelope of the angular acceleration of the steering shaft, as modified by a scaling factor whereby a maximum defined offset torque is applied at a maximum defined amplitude and angular acceleration of the steering shaft.