Patent ID: 6501263
Filing Date: 2002-12-31
Classification: B60G,F15B,G01B,G01D

Abstract:
A steering angle sensing system for measuring the angle position of a vehicle steering wheel, controlling the position of vehicle wheels, comprising;a. a position magnet (7, 8; G1, G2, G3) coupled to the steering wheel (2â€²) rotary movement and a measuring device (4, 9; 28) having a magnetostrictive waveguide stationary referred to the rotary movement of position magnet (7, 8; G1, G2, G3) which is intended for measuring transducer signals, whereby the measuring device (4, 9; 28) and the position magnet (7, 8; G1, G2, G3) are arranged with respect to each other so that the position magnet signals detected by the measuring device (4, 9; 28) indicate the relative position between steering wheel (2â€²) and measuring device (4, 9; 28); b. said position magnet (7, 8; G1, G2, G3) and magnetostrictive waveguide (9; 28) being coupled as a transducer to the steering wheel (2â€²) rotary movement by said magnetostrictive waveguide (9; 28) extending over a defined arc path traversed by said position magnet (7, 8; G1, G2, G3); and a mode converter (10; 35) fitted at one end of the magnetostrictive waveguide (9; 28) to detect the coupling location; c. characterized by at least one detector (70; 90) detecting the relative angle of the vehicle wheels.