| 摘要 |
The present invention prevents the problem of being unable to increase a wheel-cylinder pressure accurately due to low pressurization performance. In the present invention, for traction control, different filters, i.e. a hydraulic-pressure-increase filter and a hydraulic-pressure-decrease filter, are provided for increasing and decreasing a target pressure, respectively. The inhibiting effect that the hydraulic-pressure-increase filter exhibits with respect to changes in the target pressure is made less than the inhibiting effect that the hydraulic-pressure-decrease filter exhibits with respect to changes in the target pressure, making it such that the target pressure is increased quickly but decreased slowly. As such, even if the wheel-cylinder pressure is made to decrease subsequent to the actual wheel-cylinder pressure having increased to follow the target pressure, said wheel-cylinder pressure decreases only gradually, reducing the amount of pressure increase that will be needed to reach the target pressure when the wheel-cylinder pressure is next increased. The wheel-cylinder pressure can thus be increased sufficiently and made to reach the target pressure with a high degree of responsiveness, making it possible to prevent the problem of being unable to increase the wheel-cylinder pressure accurately due to low pressurization performance. |
