×

Vehicle traction controller with torque and slip control

  • US 5,471,386 A
  • Filed: 10/03/1994
  • Issued: 11/28/1995
  • Est. Priority Date: 10/03/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of controlling vehicle directional stability and the traction of one or more wheels of said vehicle being driven over a surface, said vehicle having at least a pair of driven wheels, said method comprising in combination, the steps of:

  • (a) generating a rotational velocity value indicative of the rotational velocity of said vehicle;

    (b) selecting, as a function of said rotational velocity value, from the wheels of said vehicle, a first pair of wheels to be controlled by application of a braking force upon said wheels, said pair of wheels both existing on the same side of said vehicle;

    (c) comparing said rotational velocity value to a predefined rotational velocity range indicative of a range of acceptable rotational velocity values;

    (d) responding to said rotational velocity value being outside of said rotational velocity range by generating a wheel torque value which is indicative of a braking force to be applied independently of driver initiated braking to one of said first pair of wheels;

    (e) determining if either of said driven wheels is spinning and responding to the spinning of either of said driven wheels by generating a wheel torque value indicative of a braking force to be applied to the spinning wheel; and

    (f) determining if either of said driven wheels is skidding and responding to the skidding of either of said driven wheels by generating a braking adjustment value indicative of an amount by which a braking force being applied to said skidding wheel is to be modulated to reduce skidding of said wheel.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×