Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Hirohide Iwase

Tatsuo Sugitani

Ryuichi Kurosawa

Susumu Oda

Yukio Yamamoto

Yukio Maeda

Ryushi Tanaka

Takashi Shirasu

This controller controls a varible damping force shock absorber taking the cycle time and the oscillating phase of the body vibration. The controller increases the damping force when the body is moving toward its mean position. Before that, the damping force is kept weak so that the body vibration is hastened to become moving toward the mean position. Some criteria for determining that the body is moving toward its mean position are proposed.

Shock absorber controller

Root mean squares are obtained for the amplitude produced within a given period of time in the surges within such frequency scope as allows the human sense to perceive them easily among the surges of a variety of frequencies which occur in a motor vehicle during running. The magnitude of the squares obtained is substantially coincident with that of the surges felt by the human sense.

Method for evaluating surges of motor vehicles

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Mishima, Japan

Hirohide Iwase