Abstract: A kind of four-wheel steering system is introduced, which is powered hydraulically and controlled by a single piece processor. This system is different from current steering system in all aspects. When a turning action occurs, the four wheels turn simultaneously, and every wheel can turn in the range of 180°. Under the control of the single piece processor, the vehicle body can move in any direction with given form and no dead zone in the range of 360°. The wheels are driven by rack cylinders which are controlled by proportional direction valve and powered by a hydraulic station. This system is suitable for any load, and the synchronism tolerance of the four wheels is less than 2.1°.
Key words:
Single piece processor Control Four-wheel steering
Manuscript received on March 1, 1994
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