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Method and apparatus for phase compensation in a vehicle control system

  • US 5,528,119 A
  • Filed: 10/20/1994
  • Issued: 06/18/1996
  • Est. Priority Date: 05/30/1994
  • Status: Expired due to Term
First Claim
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1. In a control system of a vehicle for providing an output signal (y) having a time derivative which is limited in relation to a time derivative of an input signal (u) if the time derivative for the input signal (u) exceeds a predetermined value, the improvement comprising means for providing phase compensation in the control system, including:

  • primary rate limiting circuit means (1) for providing a signal (x) and for arranging said signal (x) to have a time derivative which is not limited in relation to the time derivative for the input signal (u), including;

    difference means for forming a difference signal (ε

    ) between the output signal (y) and the signal (x),feedback means for feeding back said difference signal (ε

    ) to the input of said primary rate limiting circuit means,said feedback means including an filter means (3) for producing a feedback signal (δ

    ), andadding means (4) for adding said feedback signal (δ

    ) to the input signal (u) and for outputting said signal (x).

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