What does SAS stand for?

Once the high-resolution, steering angle sensor recognises steering behaviour that typically indicates the onset of drowsiness, a warning signal is sounded and "attention assist

That unit coordinates torque based on the difference between actual and target yaw rates by comparing the output of the yaw rate sensor with the rate calculated from the steering angle sensor.

Thus TRW is able to supply all of the steering hardware and software: the column drive motor, electronic control unit and steering angle sensors, the column itself and the complete steering rack.

RELATED ARTICLE: ELECTRONIC STABILITY PROGRAM ESP[R] Components of the Electronic Stability ESP[R] from Bosch: 1 ESP-Hydraulic Unit With Integrated ECU 2 Wheel Speed Sensors 3 Steering Angle Sensor 4 Yaw Rate Sensor With Integrated Acceleration Sensor 5 Engine-Management ECU for Communication [GRAPHIC OMITTED] By William Kimberley, Editor Automotive Engineer, London--williamk@pepublishing.

The system uses a yaw sensor, lateral accelerometer and steering angle sensor to monitor vehicle stability and driver inputs.

He says TRW is already doing this by sharing a single steering angle sensor between its electric power steering and traction control systems.

Sensor Fusion enables data from the second source, the steering angle sensor, to be accessed and processed before also being presented on the driver's display.

The Airmatic control unit receives its signals from two sensors in the front and rear axles that monitor the level of the body, three accele ration sensors mounted on the body and a steering angle sensor.