The IMU (Inertial Measurement Unit) is basically a electronic device that combines both accelerometers and gyros to be able to measure both linear acceleration and changes in orientation.
By measuring these measurements and conbine them as well as readings from wheel speed sensors, a modern IMU-equipped motorcycle knows precisely what’s going on at all times.
It can tell if a wheel is starting to spin or to lock-up, whether both wheels are on the ground, your lean angle and even the angle that you’re wheelying at.
The verified signals of pitch, roll and longitudinal, lateral and vertical acceleration are transmitted to the data bus via standardized interface (CAN bus).
The signals are used in complex control algorithms to enhance comfort and/or safety applications of the motorcycle (e.g. traction control, semi-active suspension, adaptive/active lighting, optimized curve ABS, advanced rider assistance systems, etc.).