The Effect Of Sound On The Gyroscopes In Your Car

Motion control systems, such as traditional Electronic Stability Control (ESC) systems, in autonomous vehicles rely on sensors. One of these sensor types are gyroscopes. In our research we found a resonance frequency of an automotive grade MEMS gyroscope when exposing the gyroscope to audible sound frequencies. As this caused the yaw rate to be altered we further analyzed the ESC system's reaction on an altered yaw rate. This caused a system error that was indicated by error codes and an active warning light. Last but not least we describe improvements that can enhance the ESC system's availability.