Systematic abnormality detection in control commands for controlling power steering system

US9598102B2 · kind B2 · utility

Assignees

• Steering Solutions IP Holding Corporation · US
• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Scott A. Millsap · Saginaw, US
• Ashok Chandy · Fenton, US
• Kevin L. Derry · Wheeler, US
• Caroline Dannöhl · Hersbruck, DE
• Hans-Peter Hank · Munich, DE
• Jens Schotte · Olching, DE
• Kristian Vetter · Gerolzhofen, DE

Key dates

• Filing date: Oct 20, 2014
• Grant date: Mar 21, 2017
• Expiry date: Jan 3, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D5/0493
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method of mitigating abnormalities in a first control command for controlling a power steering system is provided. The method generates a range signal indicative of a range of command values based on a plurality of input signals. The method determines whether the first control command is out of the range for longer than a predetermined duration of time. The method limits the first control command to the range and sends the limited first control command to the power steering system in response to determining that the first control command is out of the range for shorter than or equal to the duration of time.