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:
Mar. 04, 2003
Filed:
Sep. 21, 2000
David S. Nyce, Apex, NC (US);
MTS Systems Corporation, Eden Prairie, MN (US);
Abstract
A steering angle sensing system for measuring the angle position of a vehicle steering wheel is disclosed which uses at least one position magnet G G G coupled to the rotary movement of the steering wheel ′ as a transducer, and a magnetostrictive transducer as a measuring device and a second measuring device for measuring the angular movement of the vehicle wheels. Magnetostrictive transducer includes an elongated, magnetostrictive waveguide extending over a defined arc section, with mode converter for detecting magnetostrictively generated voltage pulses at one end. The waveguide is stationary related to the rotary movement of at least one position magnet G G G so that, when turning the steering wheel ′, the magnet field of one position magnet G G G is applied to waveguide in different positions dependent of the position of the steering wheel ′. The second measuring device may measure gross changes to distinguish 360° or less, for example 270°, rotation whereas the steering wheel measuring device measures fine changes of the vehicle steering wheel