Patent ID: 8914194
Filing Date: 2014-12-16
Classification: B62D,G01D

Abstract:
1. A stimulus-based steering sensor device comprising at least one driving wheel installed on a steering column of a steering wheel; a processor generating a stimulus signal and having a built-in signal-angle lookup table; two driven wheels contacting said driving wheel and driven by said driving wheel to rotate at different speeds when said driving wheel follows rotation of said steering column; and two resolvers connecting with said processor, respectively engaging with said two driven wheels, receiving said stimulus signal, and outputting two first sinusoidal signals to said processor according to rotations speeds of said two driven wheels, whereafter said processor analyzes said two first sinusoidal signals to obtain two second sinusoidal signals having different periods, and uses said two second sinusoidal signals, said signal-angle lookup table to obtain a first absolute angle value of rotation of said steering wheel.