Steering wheel-based adaptive headlight controller with symmetric angle sensor compensator for functional safety requirement

Steering angle-based adaptive headlight controller for safe operation in emergency situations is proposed by adopting the compensation method of the symmetric two angle sensor data. Adding the intelligence in automotive applications results in increased chance of unsafe operations, requiring the integration of additional safety functions. In this paper, we introduce our efforts to integrate the safety observer with the adaptive headlight controller, still providing safe angle control in an abnormal situations by the steering angle. If the symmetric behavior of two angles is broken in the unknown interruption, the backup angles are restored into the active angle control value.