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Electronic ride control system for off-road vehicles

  • US 5,890,870 A
  • Filed: 02/20/1997
  • Issued: 04/06/1999
  • Est. Priority Date: 09/25/1996
  • Status: Expired due to Term
First Claim
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1. A control system for reducing the oscillation of a work vehicle as it moves across a surface, the work vehicle of the type including an implement moveable relative to a vehicle, the system comprising:

  • a hydraulic fluid source;

    a hydraulic actuator coupleable between the vehicle and the implement to lift the implement;

    an electronic valve coupled to the source and the actuator to control the flow of hydraulic fluid applied to the actuator by the source;

    an accelerometer coupleable to the work vehicle to generate an acceleration signal related to an acceleration of the work vehicle;

    a position transducer mechanically coupleable between the implement and the vehicle to generate a position signal representative of a position of the implement with respect to the vehicle; and

    an electronic controller coupled to the electronic valve, the accelerometer, and the position transducer, the controller generating valve command signals for the work vehicle based upon the acceleration signal and the position signal and applying the command signals to the electronic valve to cause the electronic valve to control the flow of the hydraulic fluid applied to the actuator to reduce the oscillation of the work vehicle as it moves across the surface.

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