| 摘要 |
<p>A steering angle middle point detecting apparatus of the invention is provided with a vehicle speed (18) sensor for detecting vehicle speed, a torque sensor (6) for detecting at regular intervals steering torque to be added to a steering wheel, a steering position detecting (17) means for detecting a steering position of a steering mechanism, a means for comparing a steering torque set value previously set corresponding to the vehicle speed with the steering torque detected by the torque sensor, and a steering angle middle point calculating means for calculating a middle point of a steering angle by using the steering position of the steering mechanism detected by the steering position detecting means (17) when the steering torque is smaller than the steering torque set value, which judges that the vehicle goes straight when the detected steering torque is smaller than the steering torque set value corresponding to the vehicle speed, and judges the steering position at that time to be the middle point of the steering angle. Further, a steering angle middle point detecting apparatus of another invention is added, a judgment of an angle velocity of the steering angle, that is, a rotational speed of the steering wheel or variation of the steering torque, judges that the vehicle goes straight when it is at the specified value or less, and judges the steering position at that time to be the middle point of the steering angle.</p> |
