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Safe Adaptive Headlight Controller with Symmetric Angle Sensor Compensator Using Steering-swivel Angle Lookup Table
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 Title & Authors
Safe Adaptive Headlight Controller with Symmetric Angle Sensor Compensator Using Steering-swivel Angle Lookup Table
Youn, Jiae; An, Joonghyun; Yin, Meng Di; Cho, Jeonghun; Park, Daejin;
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AFLS (Adaptive front lighting system) is being applied to improve safety in driving automotive at night. Safe embedded system design for controlling head-lamps is required to improve noise robust ECU hardware and software simultaneously by considering safety requirement of hardware-dependent software under severe environmental noise. In this paper, we propose an adaptive headlight controller with a newly-designed symmetric angle sensor compensator, especially based on the proposed steering-swivel angle lookup table to determine whether the current controlling target is safe. The proposed system includes an additional backup hardware to compare the system status and provides safe swivel-angle management using a controlling algorithm based on the pre-defined lookup table (LUT), which is a symmetric mapping relationship between the requested steering angle and expected swivel angle target. The implemented system model shows that the proposed architecture effectively detects abnormal situations and restores safe status of controlling the light-angle in AFLS operations under severe noisy environment.
Functional safety;Fail safe;Safe controller design;AFLS;Hazard detection & response;
 Cited by
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