Toyota Jidosha Kabushiki Kaisha

Koutaro Okimura

Masaaki Tabata

Hideki Ohashi

Toshio Onuma

Masaki Kanatani

Takenari Yamaguchi

Atsushi Mizuta

Atsushi Ogawa

Motohiko Honma

Taisuke Hayashi

Takahito Watanabe

The magnitude of a linear damping coefficient Cis set so as to decrease the greater a maximum amplitude value &#x3b1; of an intermediate frequency sprung acceleration is. In the case where a damping force control apparatus carries out control for dampening vibrations of a sprung member using a nonlinear H-infinity control theory, the linear damping coefficient Cis set to a high value when the maximum amplitude value &#x3b1; of the intermediate frequency sprung acceleration inputted to a suspension apparatus is low. Accordingly, a requested damping force Falso increases, which makes it possible to quickly dampen vibrations in the sprung member. Meanwhile, in the case where the maximum amplitude value &#x3b1; of the intermediate frequency sprung acceleration is high, the linear damping coefficient Cis set to a low value. Accordingly, the requested damping force Falso decreases, which makes it possible to suppress degradation in the riding quality when intermediate frequency vibrations are inputted, and particularly makes it possible to suppress riding quality degradation when the vibration speed is high.

Damping force control apparatus

A height controlling apparatus for controlling at least one actual height as a relative position of (a) a body of a vehicle and (b) at least one wheel of the vehicle relative to each other, the apparatus including at least one height controlling actuator which changes the at least one actual height; and an actuator control device which controls the at least one height controlling actuator so that the at least one actual height approaches at least one target height. The actuator control device includes a possibility detecting device which detects, before an absolute value of a difference of the at least one target height and the at least one actual height exceeds a reference value, whether there is a possibility that an object may be present in a direction in which the body is moved to change the at least one actual height, and a movement restraining portion which controls, when the possibility detecting device detects that there is the possibility, the at least one height controlling actuator to restrain a movement of the body in the direction.

Height controlling apparatus

Growing community of inventors

Toyota, Japan

Koutaro Okimura