Patent ID: 7254470
Filing Date: 2007-08-07
Classification: B62D,G01D

Abstract:
1. A method of generating a fault tolerant sensor signal for a motor control system in a vehicle steering system comprising: receiving at least three sensor signals indicative of an amount of torque applied to said vehicle steering system; generating a plurality of torque pair signals responsive to said at least three sensor signals, each torque pair signal of said plurality of torque pair signals being based on at least two sensor signals of said three sensor signals; generating a plurality of diagnostic signals responsive to said at least three sensor signals, each diagnostic signal of said plurality of diagnostic signals indicating whether a corresponding torque pair signal from the plurality of torque pair signals is valid; selecting only one torque pair signal of said plurality of torque pair signals based on said plurality of diagnostic signals; and generating a measured torque signal indicative of the amount of torque applied to said vehicle steering system responsive to said selecting.