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Method and device for controlling propulsion in motor vehicles

  • US 5,029,090 A
  • Filed: 06/08/1989
  • Issued: 07/02/1991
  • Est. Priority Date: 06/08/1988
  • Status: Expired due to Fees
First Claim
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1. Method for controlling propulsion in motor vehicles in the sense of maintaining stable driving conditions comprising the steps of:

  • calculating a variable characterizing the steady-state driving condition;

    calculating successive mathematical values (RR) which adequately represent the variable from the vehicle speed and the steering angle continuously at time intervals;

    calculating a mathematical value (RR) from each mathematical value (RR);

    comparing a measurement value (M) and each mathematical value (RS) with one another; and

    generating control signals for at least one of the brakes and/or for a power actuator of the vehicle engine in accordance with a result of the step of comparing;

    wherein the step of calculating the mathematical value (RS) from the mathematical value (RR) comprises the steps of;

    phase-delaying the mathematical value (RR) depending on at least one measurement variable (v) related to the dynamics of vehicle movement;

    averaging a difference between the phase-delayed mathematical value (RR) and the measurement value (M) over a predeterminable period to produce an averaged value and;

    adding the averaged value to the phase-delayed mathematical value (RR) to produce the mathematical value (RS);

    wherein the mathematical value (RS) is compared with the measurement value (M), andwherein a difference (D) between differences of measurement values and phase-delayed mathematical values produced in successive time intervals is formed, and a particular parameter (EG) for calculating the mathematical value (RR) is changed in accordance with the value of this difference (D).

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