System for controlling multiple car wheels turning accurately

Abstract

An accurate steering control system for the multiple wheels of a car is composed of a steering control unit consisting of a microprocessor containing the mathematical models for various steering modes, database and control program, the angle sensor for steering wheel and the rotation angle sensor for wheels, and a steering execution unit for individual steering of each wheel by rolling without lateral sliding.

Description

technical field [0001] The invention belongs to a control system of mechanical movement, and in particular relates to a multi-wheel steering control system of an automobile. Background technique [0002] Certain special vehicles require steering control of four or more wheels, as is the case with aircraft tractors. Known aircraft tractor steering system is made up of main components such as hydraulic pump, steady flow valve, hydraulic steering gear, hydraulic cylinder, steering drive axle, hydraulic pump is driven by engine or electric motor, hydraulic steering gear is coaxial with steering wheel, and hydraulic cylinder is contained in The axle is used to drive the wheels to turn. When the steering wheel turns, the high-pressure oil from the hydraulic pump will input an appropriate amount of high-pressure oil to the corresponding oil port of the hydraulic cylinder according to the direction of steering wheel rotation and the size of the rotation angle, so as to realize the ...

AI Technical Summary

Problems solved by technology

This kind of steering control design is constrained by the rigid structure of the steering trapezoidal mechanism, and it cannot take into account that the instantaneous center of the vehicle's steering is consistent with the theoretical steering instantaneous center during two-wheel steering, four-wheel steering or even multi-wheel steering. This is the current four-wheel steering aircraft tractor. and other causes of severe tire wear on multi-wheel steer vehicles

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