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Electronic controlled fluid suspension system with an advance control and a feedback control of a vehicle attitude

  • US 4,949,262 A
  • Filed: 09/02/1988
  • Issued: 08/14/1990
  • Est. Priority Date: 09/03/1987
  • Status: Expired due to Term
First Claim
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1. An electronic controlled fluid suspension system for a vehicle comprising:

  • a plurality of fluid actuators, one corresponding to each wheel of the vehicle;

    a driving state detection means for detecting driving parameters of the vehicle;

    an advance control means responsive to the detected driving parameters for anticipating a change in an attitude of the vehicle caused by a change in direction or velocity of the vehicle and for generating an advance control amount to alleviate the anticipated change in the attitude of the vehicle;

    a feedback control means responsive to the detected driving parameters for measuring the change in attitude of the vehicle and generating a feedback control amount in order to alleviate the measured change in the attitude of the vehicle;

    a share determination means responsive to the detected driving parameters for determining shares of the advance control amount and the feedback control amount;

    a control amount generating means for generating a final control amount from the advance control amount and the feedback control amount according to the determined shares; and

    a fluid flow control means responsive to the final control amount for controlling fluid flow from and into the fluid actuators.

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