Electrical steering system

US6693405B2 · kind B2 · utility

Assignee

• Sauer-Danfoss Holding A/S · DK

Inventors

• Mogens Blanke · Farum, DK
• Jesper Sandberg Thomsen · Hadsten, DK
• John Kristensen · Skanderborg, DK
• Torben Frederiksen · Homburg, DE

Key dates

• Filing date: Oct 30, 2001
• Grant date: Feb 17, 2004
• Expiry date: Dec 1, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D5/003
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An electrical steering system for a vehicle includes an electrically supplied steering motor arrangement which is connected with an inverter arrangement, whose output voltage is influenced by a computer arrangement, and a sensor arrangement. To reduce the cost of the steering system while also allowing the steering system to be steerable during braking in the case of a fault, the steering motor arrangement has a redundant steering motor which is connected with the computer arrangement via two separately run control circuits. The control circuits have separate electric supplies and the computer arrangement is redundant.