A two-degree-of-freedom steering drive system for automobile headlights

Abstract

The invention discloses a two-degree-of-freedom steering driving system of an automobile headlamp. The two-degree-of-freedom steering driving system comprises a lamp body, a first support, a two-degree-of-freedom linear motor, a micro controller, a first universal joint, a substrate, a second universal joint and a second support, and is characterized in that the side face of the two-degree-of-freedom linear motor is in an arc shape, a rotor is capable of both making linear motion and making rotating motion, and the micro controller is connected with the two-degree-of-freedom linear motor through a wire. The two-degree-of-freedom steering driving system is simple in structure, high in reliability and low in cost, and can meet the high horizontal and vertical two-degree-of-freedom steering sensitivity and accurate horizontal and vertical two-degree-of-freedom steering angle requirements of the headlamp, thus conforming to the steering intention of a driver. Horizontal and vertical two-degree-of-freedom angle adjustment of the headlamp is realized, the steering rapidity and the steering angle accuracy of the lamp body are ensured, and a blind area is lightened.

Description

technical field [0001] The invention relates to a device for adjusting the lighting direction, angle and width of a headlight of an automobile, in particular to a two-degree-of-freedom steering drive system of the headlight of an automobile. Background technique [0002] The direction of the headlights of traditional vehicles is fixed, and the headlights are consistent with the driving direction of the vehicle. In the case of poor vision at night or due to weather, lighting "blind spots" will inevitably appear when turning; Various changing axle loads such as slopes and downhills lead to changes in the inclination angle of the headlights, which cannot effectively illuminate the road in the direction of the vehicle. In these cases, if there are obstacles on the road, traffic accidents may result. [0003] The two-degree-of-freedom steering technology (AFS) of automobile headlights is mainly to improve the poor vision caused by night and weather factors. The headlight two-de...

AI Technical Summary

Problems solved by technology

The system is complex in structure, expensive to manufacture and prone to failure

In addition, because the steering of the lamp body is completed by the motor-driven gear, there are problems such as steering lag, poor steering sensitivity, steering angle deviation, and crawling, which cannot reflect the driver's true intention.

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