An electro-hydraulic steering system

Abstract

The invention provides an electro-hydraulic control steering system, comprising: a hydraulic circuit control device, the hydraulic circuit control device includes: a hydraulic pump for supplying hydraulic oil; a rear axle steering oil cylinder for controlling the steering of the rear wheels of the vehicle and a front axle steering cylinder for controlling the steering of the front wheels of the vehicle; an electric proportional directional valve for controlling the flow of hydraulic oil to said rear axle steering cylinder or said front axle steering cylinder; a switching valve; and an angle measuring device, which It includes an angle sensor for measuring the steering angle of the wheel, and the angle sensor is fixedly connected to the rear axle and / or front axle of the vehicle; wherein, the angle measuring device measures the actual steering angle of the wheel through the angle sensor , the electric proportional reversing valve controls the flow direction of hydraulic oil according to the relationship between the actual steering angle of the wheels and the target steering angle, so as to control the movement of the rear axle steering cylinder and the front axle steering cylinder, Thereby realizing the automatic control of wheel steering.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to an electro-hydraulic control steering system. Background technique [0002] In order to adapt to the development of intelligent process and meet people's demand for intelligent products, the steering system of vehicles is gradually realizing intelligent automation. [0003] In the conventional steering system, the steering control of the vehicle is mainly realized through the hydraulic steering gear, specifically through manual adjustment of the steering wheel, and the traditional steering system utilizes mechanical transmission components. Human-controlled steering, due to various human reasons, such as fatigue driving, drunk driving, etc., there will be a certain reaction time for people to control the vehicle, so the operation will be delayed, resulting in inaccurate steering control. At the same time, human-controlled vehicle operation, in the face of some special...

AI Technical Summary

Problems solved by technology

Human-controlled steering, due to various human reasons, such as fatigue driving, drunk driving, etc., there will be a certain reaction time for people to control the vehicle, so the operation will be delayed, resulting in inaccurate steering control

At the same time, human-controlled vehicle operation, in the face of some special situations, the response is not timely and the safety is low

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