Circuit/System Description

The yaw rate, lateral acceleration and longitudinal acceleration sensors are combined into one yaw/lateral accelerometer sensor, external to the electronic brake control module (EBCM). The EBCM supplies a 12 V reference voltage to the yaw/lateral accelerometer sensor. The vehicle stability enhancement system uses the longitudinal accelerometer input when calculating the desired yaw rate. The usable output signal is sent by the serial data CAN circuits to the EBCM. The EBCM activates the stability control function depending on the yaw/lateral accelerometer sensor input, the steering angle sensor signal and the vehicle speed.