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Steering control apparatus for vehicle

  • US 5,265,019 A
  • Filed: 10/16/1991
  • Issued: 11/23/1993
  • Est. Priority Date: 10/17/1990
  • Status: Expired due to Fees
First Claim
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1. A steering control apparatus for a vehicle, comprising:

  • a transmission ratio changing mechanism located between a steering wheel and front wheels of the vehicle, for changing a turning angle of the front wheels, which is caused by turning the steering wheel;

    an actuator for driving the transmission ratio changing mechanism to correct the turning angle of the front wheels;

    turning state sensing means for detecting a first turning action, a second turning action in a direction opposite to a direction of the first turning action, and an angular turning speed of the steering wheel; and

    control means for controlling the operation of the actuator in accordance with the detection signals from the turning state sensing means,the control means including means for comparing a value of the angular turning speed of the steering wheel for the second turning action with a reference value, and output means for outputting a corrective turning control signal, for increasing the turning angle of the front wheels by a predetermined corrective turning angle, to the actuator when the comparing means detects that the value of the angular turning speed of the steering wheel is at least equal to the reference value, during the second turning action of the steering wheel.

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