Patent · US Expired

Magnetostrictive linear displacement transducer for a vehicle steering system

US6426618B1 · kind B1 · utility

5Cited by

2References

14Claims

0Family size

Assignee

MTS SYSTEMS CORPORATION · US

Inventors

David S. Nyce · Apex, US
Norbert Bendicks · Breckerfeld, DE
Frank Blasing · Werl, DE
Ralf Bobel · Dortmund, DE

Key dates

Filing date	Jun 28, 1999
Grant date	Jul 30, 2002
Priority date	—
Expiry date	Jun 28, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60G2401/172
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A steering angle sensing system 1 for measuring the angle position of a vehicle steering wheel is disclosed which uses at least one position magnet 7, 8 coupled to the rotary movement of the steering wheel as a transducer, and a magnetostrictive transducer 4 as a measuring device. Magnetostrictive transducer 4 includes an elongated, magnetostrictive waveguide 9 extending over a defined arc section, with mode converter 10 for detecting magnetostrictively generated voltage pulses at one end. The waveguide 9 is stationary related to the rotary movement of at least one position magnet; 7, 8, so that, when turning the steering wheel, the magnet field of one position magnet 7, 8 is applied to waveguide 9 in different positions dependent of the position of the steering wheel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.