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Method for controlling a front and rear wheel steering vehicle

  • US 5,627,754 A
  • Filed: 03/03/1995
  • Issued: 05/06/1997
  • Est. Priority Date: 03/18/1994
  • Status: Expired due to Fees
First Claim
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1. A method for controlling a front and rear wheel steering vehicle having front wheels that can be steered according to a steering input, and rear wheels that can be steered according to the steering angle of the front wheels and a running condition of the vehicle, comprising the steps of:

  • (a) steering said rear wheels in an opposite phase relationship to said front wheels to offset an under-steer tendency of said vehicle when a lateral acceleration acting on said vehicle is between a first prescribed value and a second prescribed value higher than said first prescribed value, and(b) steering said rear wheels in a same phase relationship to said front wheels to prevent an excessive slip angle from developing in said rear wheels when said lateral acceleration is greater than said second prescribed value, and a slip angle of said vehicle body would otherwise develop the excessive slip angle in said rear wheels.

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