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Vehicle steering system

  • US 5,944,137 A
  • Filed: 08/28/1997
  • Issued: 08/31/1999
  • Est. Priority Date: 08/28/1996
  • Status: Expired due to Fees
First Claim
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1. a vehicle steering system with electronic control circuit for coupling a steering input device and steered vehicle wheels by means of a signal evaluation circuit that generates output signals for controlling a steering motor which actuates said steered vehicle wheels, said system comprising:

  • a transducer actuated by the steering input devices; and

    an electronic control circuit connected to receive signals from said transducer as inputs, for generating said output signals by converting such input signals with a predeterminable progressivity between changes in the input signals and changes in said output signals, said electronic control circuit having a filter that passes only those frequencies of said input signals below a transition frequency;

    wherein the filter operateswith a low transition frequency when a direct translation exists for steering between the adjusting travel of steering input device and the change in the steering angle of steered wheels of the vehicle; and

    with a high transition frequency when an indirect translation exists between the adjusting travel of steering input device and the change in the steering angle of steered wheels of the vehicle.

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