摘要 |
<p>PROBLEM TO BE SOLVED: To use improved values of a wheel rotating speed and a wheel speed by correcting a signal induced from a wheel rotating speed signal to show a vehicle speed according to the moving speed of a circumferential object recognized to be stationary to the car body. SOLUTION: In a step 102, it is checked whether the vehicle speed is within a speed range where a correction coefficient is decided, and if YES, when it is confirmed in a step 103 that the vehicle acceleration or the vehicle deceleration calculated from the wheel rotating speed is not within a specified band of vehicle acceleration or vehicle deceleration, in a step 104, it is confirmed that apparently an error in measurement or calculation exists. To enable a system to be re-stabilized, in a step 105, program execution is suspended. On the other hand, when it is confirmed in the step 103 that the vehicle acceleration or the vehicle deceleration calculated from the wheel rotating speed is within a specified band, the transition to a step 106 occurs.</p> |