In addition to dynamic rotation adjustment, AFS(Adaptive Front-lighting System) provides car dynamic level adjustment. This function adjusts the headlight level according to the signal of the load axis sensor, which can adapt to different loads and different slope environments. However, the rotation and leveling of the car’s AFS are achieved by stepper motors, so it is important for designers to use the right motor drive solution.
AFS is a system consisting of a sensor group, a transmission path, a processor, and an actuator. And the AFS actuator is made up of a series of motors and optical mechanisms. There are generally projection headlights, an adjustment motor that adjusts the vertical angle of the headlights, a rotary motor that adjusts the horizontal angle of the headlights, a movable grating that adjusts the basic light pattern, and some additional lights.
The existing automatic horizontal dimming device consists of two suspension height sensors, one ECU and two stepper motors. When the height of the car body changes, the front axle and rear axle height sensors will output different voltage signals to the ECU in real time. The ECU can calculate the inclination of the vehicle body relative to the initial position according to the output signals of the front and rear axle height sensors and the vehicle body wheelbase, and then the illumination height of the headlights is adjusted by controlling stepper motors to compensate for this change. However, the light-adjusting system of the present invention is complex and costly, and the light-adjusting motor is also easily damaged.
Stepper motors from ZHAOWEI effectively drive headlight
Zhaowei values the safety of driving at night. And stepper motors are important parts to improve that the headlights meet the lighting requirements during the driving process at night. The safety and stability of the headlights are very important. Zhaowei AFS drive solution optimizes the structure and gear precision of the car headlight regulator motor and gearbox, effectively improving the efficiency and quality of the rotating motor and reducer, and improves gear transmission angle is unstable in the long run and on the pitted road.
Automatic headlight gearbox
Headlight regulating mechanism
Headlamp adjustment geared motor
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