Patent ID: 7028804

Claim:
A steering angle neutral position detection error protecting method for a method of detecting a steering angle neutral position based on a velocity difference between right and left vehicle driven wheels, comprising: a vehicle wheel velocity detecting step of detecting a vehicle wheel velocity of each of the right and left driven wheels; a right and left wheel velocity difference computing step of obtaining a right and left wheel velocity difference from the vehicle wheel velocity of said driven wheels detected in said vehicle wheel velocity detecting step; a steering angle detecting step of detecting a steering angle of a steering wheel; and a detection error determining step of determining that if a condition that said right and left wheel velocity difference obtained by said right and left wheel velocity difference computing step is less than a first predetermined velocity, a condition that said steering angle detected by said steering angle detecting step is more than a predetermined value and a condition that at least one vehicle wheel velocity of said driven wheels detected by said vehicle wheel velocity detecting step is more than a second predetermined velocity are all satisfied in a predetermined period, there is an abnormality in at least one vehicle wheel velocity of said driven wheels detected by said vehicle wheel detecting step.