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Anti-spin control system

  • US 4,042,059 A
  • Filed: 07/14/1975
  • Issued: 08/16/1977
  • Est. Priority Date: 05/21/1973
  • Status: Expired due to Term
First Claim
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1. A spin control system for a steerable vehicle having first and second wheels which are driven at least under predetermined conditions and are steerable through varying angles of steering and which are disposed on laterally opposed sides of said vehicle so that an inside one of said wheels is disposed closer to the center of turning of said vehicle during steering in one direction than the other of said wheels comprising:

  • means for generating a signal representative of the speed of said inside wheel;

    means for generating a reference signal;

    compensating means for adjusting the value of said wheel speed signal in accordance with the steering angle of said inside steerable wheel so that, absent a spin condition at said inside steerable wheel, the output of said compensating means at the 0°

    steering angle position defines a first signal value and for turns in said one direction from a straight course, the value of the output signal from said compensating means is greater than said first signal value when the turning radius of said inside steerable wheel is less than the average turning radius of said vehicle, is equal to said first signal value when the turning radius of said inside steerable wheel is equal to the average turning radius of said vehicle, and is less than said first signal value when the turning radius of said inside steerable wheel is greater than the average turning radius of said vehicle; and

    means for comparing said adjusted wheel speed signal and said reference signal for providing a spin signal.

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