Electromagnetic Compatibility Evaluation of Automotive Wheel Speed Sensors

With the recent advancements in autonomous driving research, the number of electronic components in vehicles has increased significantly, necessitating the integration of various control and sensor systems. Consequently, it is essential to evaluate the electromagnetic compatibility (EMC) of vehicles equipped with such systems. Among these, the wheel speed sensor (WSS) plays a crucial role in measuring the current speed of a vehicle and serves as a key component in systems such as the antilock braking system (ABS) and electronic stability control (ESC). Therefore, minimizing electromagnetic emission (EMI) and ensuring electromagnetic immunity (EMS) are becoming increasingly important. This study analyzes the evolution of electromagnetic evaluation methods for WSSs and proposes improvements for future assessment practices.