Front axle assembly of automatic driving test target vehicle carrying platform

Abstract

The invention relates to a front axle assembly of an automatic driving test target vehicle carrying platform, which comprises a shell, a wheel assembly, a steering assembly and a suspension assembly, wherein the front axle assembly executes steering and braking instructions issued by an upper-layer controller, and steering force is transmitted to wheels through a gear rack steering system of the steering assembly to realize steering motion; the front axle assembly adopts bilateral electromagnetic brake arrangement, and the braking capacity meets the extreme test requirement; the suspension assembly adopts parallel equal-length double-cross-arm arrangement, and the wheel positioning parameters are small in change along with wheel jump; and the front axle assembly is installed in a modular embedded mode, the structural height is extremely low, and the rolling resistance is high. Compared with the prior art, the front axle assembly solves the comprehensive problems of braking force requirements, compactness, high structural strength and the like of an automatic driving target vehicle carrying platform, is matched with other executing mechanisms and target vehicles, and can meet the strict requirements of emergency braking, high-speed collision and rolling and other automatic driving danger test working conditions.

Description

technical field [0001] The invention relates to the technical field of automatic driving test, in particular to a front axle assembly of a target vehicle carrying platform for automatic driving test. Background technique [0002] Autonomous driving tests usually detect the ability of self-driving vehicles to perceive the surrounding environment, the ability to deal with emergencies, and the ability to cooperate and interact between vehicles. In order to ensure the safety of the testers and equipment in the crash test, the target vehicle is usually made of soft materials such as foam or fabric under dangerous test conditions such as emergency braking and collision of the vehicle, and has the ability to move autonomously and simulate the high speed of the car in the real road environment. ability to exercise. Since in the automatic driving collision test, when the target is running at high speed and is hit or crushed by the test vehicle at high speed, it must be ensured that ...

AI Technical Summary

Problems solved by technology

[0003]The domestic vehicle carrying platform used in the current test is too thick to complete dangerous test conditions such as emergency braking, collision, and rolling of the vehicle

For example, the "mobile target car" whose application publication number is CN 112109806 A, its mobile target car adopts the leaf spring type Ackerman steering assembly, and the assembly mechanism height of the leaf spring superimposed coil spring is relatively large, causing the overall height to be too large, and The structure cannot arrange the braking system, and it is difficult to meet the braking performance requirements of the target vehicle carrying platform for the automatic driving test

Another example is the application publication number CN 108749955 A "Traffic Simulator Carrying Platform for Unmanned Driving Test". Coupling, steering resistance and wheel wear are large, and the system also does not integrate a braking system, which makes it difficult to meet braking performance requirements

[0004]The harsh test conditions put forward strict requirements on the front axle assembly of the target vehicle platform, but there is no competent solution at present

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