| 摘要 |
<p>PURPOSE:To perform high-precise initial setting of the neutral point of a rear wheel steering angle, while control of a rear wheel steering angle is rapidly started when a rear wheel steering angle has a deviation amount, in a four- wheel steering device to control a rear wheel steering angle with the aid of an electric motor during operation of a handle. CONSTITUTION:A means to first correct a deviation amount to an approximate neutral allowable region based on a detecting signal from a subsensor (d) during initial setting of the neutral point of a rear wheel steering angle and secondly correct a deviation amount to a sever neutral allowable region based on a detecting signal from a main sensor (c) when a command value is zero during control of a rear wheel steering angle is provided.</p> |
