Steering angle neutral position detection error protecting method and detection error protecting apparatus
First Claim
Patent Images
1. 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.
1 Assignment
0 Petitions
Accused Products
Abstract
In a neutral position detection error protecting apparatus, vehicle wheel velocities of right/left driven wheels are detected and a right/left wheel velocity difference is obtained. Then, when a right/left wheel velocity difference is less than a predetermined velocity a steering rotation angle is more than a predetermined value and a vehicle wheel velocity is more than a predetermined velocity in a predetermined period, it is determined that there is an abnormality in the vehicle wheel velocities.
-
Citations
4 Claims
-
1. 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.
-
-
2. A steering angle neutral position detection error protecting apparatus for an apparatus for detecting a steering angle neutral position based on a right and left wheel velocity difference between vehicle driven wheels, comprising:
-
a vehicle wheel velocity detecting means for detecting a vehicle wheel velocity of each of right and left driven wheels; a right and left wheel velocity difference computing means for obtaining a right and left wheel velocity difference from the vehicle wheel velocity of said driven wheels detected in said vehicle wheel velocity detecting means; a steering angle detecting means for detecting a steering angle of a steering wheel; and a detection error determining means for determining that if a condition that said right and left wheel velocity difference obtained by said right and left wheel velocity difference computing means is less than a first predetermined velocity, a condition that said steering angle detected by said steering angle detecting means 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 means is more than a second predetermined velocity are all satisfied in a predetermined period, there is an abnormality in the at least one vehicle wheel velocity of said driven wheels detected by said vehicle wheel velocity detecting means. - View Dependent Claims (3, 4)
-
Specification