Methods and apparatus for determining kinetic friction in electromechanical steering actuators

US10106190B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Jan Bremkens · Straelen, DE
• Oliver Nehls · Aachen, DE
• Joseph Park · St. Clair Shores, US
• Lodewijk Wijffels · Northville, US
• Cornelius Macfarland · Garden City, US

Key dates

• Filing date: Feb 17, 2017
• Grant date: Oct 23, 2018
• Expiry date: Feb 17, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L5/221
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Methods and apparatus for determining kinetic friction in electromechanical steering actuators are disclosed herein. In some examples, the apparatus comprises a steering controller. In some examples, the steering controller is to apply an input torque to a steering system via a motor. In some examples, the steering controller is to determine an angular acceleration of the steering system in response to the input torque. In some examples, the steering controller is to determine a response torque based on the angular acceleration. In some examples, the steering controller is to determine a friction torque of the steering system based on the input torque and the response torque.