Vehicle, vehicle steering system and return control device and method of vehicle steering system

Abstract

The invention discloses a return control device of a vehicle steering system. The return control device comprises a proximity switch, a steering motor and a control unit, wherein the proximity switch right faces the detection surface of a steering wheel, a detection signal is generated according to the distance between the proximity switch and the detection surface of the steering wheel, and the detection surface of the steering wheel has a height difference; the steering motor is used for driving the steering wheel to rotate; the control unit is connected with the proximity switch and the steering motor separately, the control unit controls the steering motor according to the detection signal to make the steering wheel located in a preset return position, so that return control is conducted through the proximity switch, control over complex programs and the movement rule can be achieved, the control precision is high, and return control can be stably and efficiently achieved; the structure of a hardware circuit of a system can be simplified, and the production and maintenance cost of the system is reduced. The invention further discloses a vehicle, the vehicle steering system and a return control method of the vehicle steering system.

Description

technical field [0001] The present invention relates to the technical field of vehicles, in particular to a vehicle steering system return control device, a vehicle steering system with the return control device, a vehicle with the steering system, and a vehicle steering system return control device. Control Method. Background technique [0002] In related vehicles such as electric pallet trucks, the centering performance is an important aspect of vehicle handling stability, and the active centering control of the electric power steering system can improve the centering performance of the electric pallet truck. The electric power steering system in the related art usually uses an angle sensor to detect the steering angle of the vehicle. When the detected angle is not in the center position, the controller starts the steering motor to control the vehicle to actively return to the center. [0003] However, the disadvantages of the related technology are that the hardware circ...

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Problems solved by technology

[0003] However, the disadvantages of the related technology are that the hardware circuit structure is complex, the cost is high, and the installation space is occupied, which is not convenient for installation. At the same time, the initial value needs to be stored to calculate the current angle information. Once the initial value is lost, the wrong angle will be generated. Information, low reliability of the control system

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