Motor vehicles – Bodies – Tractor and similar vehicle cabs
Patent
1995-09-06
1997-02-18
Johnson, Brian L.
Motor vehicles
Bodies
Tractor and similar vehicle cabs
280711, 267 6424, 296190, B62D 2404, B62D 3310
Patent
active
056033877
ABSTRACT:
An active vehicle suspension employs a multi-point support system between a vehicle's chassis and cab. Each support point has an isolator which includes a linear hydraulic actuator that is connected at its quiet end to the payload by a passive vibration isolator and is connected at its vibrating end to the chassis. Each isolator also has a support spring to off-load the majority of the weight of the cab from the hydraulic actuator. An accelerometer is mounted to sense movement at a point between the linear hydraulic actuator and the passive vibration isolator. An electrical signal produced by the accelerometer is processed to operate a hydraulic valve that controls movements of the hydraulic actuator so that transmission of vibrations from the chassis to the cab is attenuated.
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Beard Andrew M.
von Flotow Andreas H.
Applied Power Inc.
English Peter C.
Johnson Brian L.
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