| 摘要 |
<p>Provided is rotational-state-of-wheel detecting apparatus that can avoid output of an incorrect rotational direction during a halt of a wheel. In an electronic control unit ECU (10), a signal input section (10a) accurately detects wheel speeds and rotational directions of respective wheels (12,14,16,18), and, based on the results, respective computers (10b,10c,10d) execute ABS control, TC control, and VSC control. On this occasion, switching of the rotational direction is restricted with a computation result of wheel speed of zero, and it is thus feasible to prevent occurrence of a malfunction or state hunting being repetitive switching of signs, due to an external magnetic field during halts of the wheels (12,14,16,18). This further optimizes the state control of a vehicle. <IMAGE></p> |
