PURPOSE: To provide a suspension controller adapted to the state of a road surface by controlling the width of a dead zone of a relative speed according to one among a spring speed, a relative speed measuring means between the upper and lower sides of a spring, the state of the road surface and a running state, and outputting a signal on the ratio of the above speeds.
CONSTITUTION: A suspension controller has acceleration sensors 10A to 10C to detect the vertical accelaration of a spring member, a spring speed measuring means 1 and displacement sensors 20A to 20D to detect the vertical displacement of the spring member, and is composed of a relative speed measuring means 2 between the upper and lower sides of the spring; a controller 3 which, after mode-converting the spring speed and the relative speed, reversely converts them for judging the state of the road surface where a car is running, and controls the width of a dead zone of the spring speed and the relative speed, which are reversely converted according to the judged state of the road surface, to obtain a speed ratio for outputting a control signal; and an actuator 4 to control the opening area of a variable choking mechanism arrangedly provided between the cylinder piston device of an absorber of a suspension mechanism and an accumulator on the above control signal.
| JP4076538 | Hydraulic stabilizer for automobiles |
| JP2970163 | WHEEL CAMBER ANGLE CONTROLLER |
YAMADA NAOKI
ONOZAWA SATOSHI
KAWAHARA KUNIHIRO
TOYOTA MOTOR CORP
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