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. 08, 2024
Filed:
Apr. 18, 2019
Zf Automotive Uk Limited, Solihull, GB;
Maciej Kudanowski, Solihull, GB;
Tamas Terdy, Birmingham, GB;
ZF AUTOMOTIVE UK LIMITED, Solihull, GB;
Abstract
A method of controlling an electric power assisted steering (EPS) system includes the steps: During a first mode of operation of the EPS system driving a motor using two inverter bridges simultaneously, the nominal current that is applied to the motor at any time by each bridge being limited to a first value, and during a fault mode of operation driving the motor using only one of the two inverter bridges. The nominal current that is applied to the motor at any time in the fault mode is limited to a second value. The method varying the second value as a function of one or more operating parameters of the EPS system. The second value is set higher than the first value when it is deemed safe to do so.