Electric intelligent linear servo tie rod vehicle steering method and system

Abstract

The invention discloses an electric intelligent linear servo tie rod vehicle steering method and system. The method comprises the following steps that a steering system obtains a target steering angleand an actual steering angle of a vehicle; an angle deviation value between the target steering angle and the actual steering angle is calculated; a target displacement value of the tie rod is calculated according to the angle deviation value; and the tie rod is driven to move according to the target displacement value. The system comprises at least two motors, a tie rod, a steering arm, and at least two electronic control units. The two ends of the tie rod are connected with one ends of the steering arms respectively, the other ends of the steering arms are connected with vehicle shaft rodsrespectively, the motors are connected with the tie rod, the electronic control unit is in communication connection with the motors respectively and used for driving the motors respectively. The steering system is simple and can be suitable for manual driving and automatic driving at the same time.

Description

technical field [0001] The invention relates to the field of transportation, in particular to the field of vehicle steering, in particular to an electric intelligent linear servo tie rod vehicle steering method and system. Background technique [0002] In the prior art, the traditional automobile steering system usually needs mechanical structures such as steering wheel, steering column, steering transmission shaft, recirculating ball steering gear with torque angle sensor, straight tie rod, steering bend arm, etc. to complete the steering function of the car. However, with the development of smart cars, the structure and function of the steering system of smart cars such as self-driving cars need to be redesigned, that is to say, the traditional car steering system will no longer be suitable for the steering structure requirements of self-driving cars. Please refer to the patent publication number: CN109017974A. In this patent, multiple gear angle control modules, torque se...

AI Technical Summary

Problems solved by technology

However, with the development of smart cars, the structure and function of the steering system of smart cars such as self-driving cars need to be redesigned, that is to say, the traditional car steering system will no longer meet the steering structure requirements of self-driving cars

Please refer to the patent publication number: CN109017974A. In this patent, multiple gear angle control modules, torque sensors, and angle sensors are installed at the bottom of the steering wheel, and the laser radar and image information are input into the steering system to control the steering of the car. However, the structure of the automobile steering system disclosed in the above-mentioned comparative document is complicated, and the precision and response speed of the automobile steering are controlled by gears when the automobile is running at high speed. The system is prone to failure, and the manufacturing cost and repair cost are high

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