초록 ▼

A vehicle, which has a body and a plurality of wheels, has a suspension system which includes: an actuator for each wheel, each of which supports the body from one of wheels and is controllable to provide a variable force between the body and the wheel; a sensor for detecting acceleration of the bod

A vehicle, which has a body and a plurality of wheels, has a suspension system which includes: an actuator for each wheel, each of which supports the body from one of wheels and is controllable to provide a variable force between the body and the wheel; a sensor for detecting acceleration of the body and for producing a signal representative thereof, a sensor for each wheel for detecting load acting between the body and the wheel and for producing a signal representative thereof; and a controller for inputting the signals representative of the acceleration of the body and the load on each wheel, for calculating based thereupon fluctations in load acting between the wheels and the body, for controlling the actuators to increase or decrease forces provided thereby between the body and the wheels, and for operating by feedback action by comparing the actual fluctuation in the force between the respective wheel and the body as sensed by the load sensor for the wheel with the calculated value therefor, and for bringing the difference between the two values to be zero. Optionally, the acceleration sensor can include either a means for sensing lateral acceleration or a means for sensing roll angle acceleration or both of these; and in the latter case this control means can utilize for control either the lateral acceleration information or the roll angle information, depending on whether the signs of these accelerations are opposite or are the same, respectively.

대표청구항 ▼

A suspension system for a vehicle comprising a body and a plurality of wheels, comprising: a plurality of actuators, each of which supports said body from one of said wheels and is controllable to provide a variable force between said body and said wheels; a sensor means for detecting acceleration o

A suspension system for a vehicle comprising a body and a plurality of wheels, comprising: a plurality of actuators, each of which supports said body from one of said wheels and is controllable to provide a variable force between said body and said wheels; a sensor means for detecting acceleration of said body in lateral directions thereof and for producing a signal representative thereof; a sensor means for detecting roll angle acceleration of said body and for producing a signal representative thereof: and a control means for inputting said signals representative of said lateral acceleration and said roll angle acceleration of said body from said sensor means, for calculating based thereupon fluctuations in load acting between said wheels and said body caused by said accelerations, and for controlling said actuators to increase or decrease forces provided thereby between said body and said wheels, wherein said control means comprises a means for: (a) detecting whether or not the direction of lateral acceleration of said body as determined by said lateral acceleration detecting means is the same as or is the opposite to the direction of roll acceleration of said body as considered for a point above the center of gravity of said vehicles; and for: (b) if said directions are the same, calculating, based upon said signal representative of said roll angle acceleration of said body from said sensor means therefor, fluctuations in load acting between said wheels and said body caused by said acceleration, and based thereupon controlling said actuators to increase or decrease forces provided thereby between said body and said wheels; and for: (c) if said directions are opposite, calculating, based upon said signal representative of said lateral acceleration of said body from said sensor means therefor, fluctuations in load acting between said wheels and said body caused by said acceleration, and based thereupon controlling said acutators to increase or decrease forces provided thereby between said body and said wheels.