Active suspension for vehicle

Abstract

Abstract PURPOSE:To aim at improvement in riding quality and travelability to an irregular road surface, by judging the extent of vertical displacement on the road surface on the basis of relative displacement between each wheel and a car body and relative travel speed and, when the vertical displacement on the road surface is more than the specified value, increasing or decreasing such force that works between the wheel and the car body. CONSTITUTION:Each servo actuator 1 is installed in each wheel 2, and in each servo actuator 1, there is provided with an actuator 4 at an interval between each wheel 2 and a car body 3. A hydraulic servo valve 12 is interconnected to each of upper and lower chambers 7 and 8, constituting the actuator 4, for example, partitioned off by a piston inside a cylinder 5 via respective conduits 10 an 11. In addition, this hydraulic servo valve 12 is controlled by a voltage signal to be inputted via an adder 15 and an amplifier 16. And an input signal into this adder 15 is constituted of a reference control signal for controlling the hydraulic servo valve 12 and a control signal for displacement out of a reference position of the piston 6 to the cylinder 5 or relative travel speed of the piston 6 to the cylinder 5.

Inventors

• 👤 Ryuichi Kurosawa
• 👤 黒沢　隆一

Bibliographic Details