Double-steering power cylinder hydraulic steering-by-wire system with steering feeling simulation function and method

Abstract

The invention discloses a double-steering power cylinder hydraulic steering-by-wire system with a steering feeling simulation function and a method. The system is composed of a steering wheel unit, a hydraulic control unit, a steering execution unit and an electronic control unit. The steering wheel unit, the hydraulic control unit and the steering execution unit are sequentially connected. The electronic control unit receives data acquired by the steering wheel unit and a sensor in the hydraulic control unit and sends a control instruction to all valves of the hydraulic control unit after processing and analyzing are conducted, the steering execution unit is controlled to move through the hydraulic control unit, and steering feeling simulation is achieved. The method comprises the multiple steering modes of steering-by-wire, hydraulic power assisted steering, steering system outage failure steering, manual steering and the like. According to the double-steering power cylinder hydraulic steering-by-wire system with the steering feeling simulation function and the method, a double-motor structure in a traditional steering-by-wire system is omitted, the steering feeling simulation process and the steering execution process of the steering system are achieved through the hydraulic system, the number of mechanical structures of the system is small, and accordingly the system is small in size, simple in structure and easy to integrate.

Description

Technical field [0001] The invention belongs to the technical field of automobile steering systems. More specifically, the present invention relates to a dual-steering power cylinder hydraulic wire-controlled steering system and method that simulates the sense of driving. Background technique [0002] The steering performance of a car plays a key role in the driving process of the car, and the function of the car steering system is to ensure that the car can steer stably in accordance with the will of the driver. Traditional automobile steering systems are usually divided into mechanical steering systems and power steering systems. The fundamental difference between the two is the power source for turning when steering. The mechanical steering system uses the driver’s physical strength as the steering energy, while the power steering system The steering system uses both the driver's physical strength and engine power as the steering power source. However, since the above two st...

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Problems solved by technology

[0005] Aiming at the problems of large size, high production cost, unfavorable integration, poor stability when the steering system is powered off and failure caused by the complex mechanical structure of the steering system in the above-mentioned prior art, and complicated and inaccurate realization of steering feel simulation, the present invention Provided is a dual-steering power cylinder hydraulic steering-by-wire system and method with road sense simulation, combined with the accompanying drawings, the technical solution of the present invention is as follows:

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