Specify the Curve Speed Adaption parameters within the Adaptive Cruise Control system

Abstract

A growing trend in the automotive industry is the Advanced Driving Assistance System (ADAS). Within this system lies the Curve Speed Adaption (CSA) which is a part of the Adaptive Cruise Control (ACC). By assessing how different drivers perform a cornering, the parameters needed for the development of the CSA control system were evaluated in this report, as well as comparing existing CSA system in competitor vehicles. Vehicle testing was performed with 14 test drivers using subjective assessment and objective measurements. Three curves were chosen to be analysed further, the first curve was an entrance to a motor way, the second was on a country road and the third on a country road with a stop sign at the end of the curve. To cover all driving situations, more drivers and driving situations need to be tested for the CSA to work properly. The most important parameters to set the requirements on were the lateral acceleration, longitudinal acceleration and velocity to accomplish a working CSA with access to a map. Other investigated parameters were brake pedal, acceleration pedal and the steering wheel angle which are not needed for the CSA to work properly since the vehicle can regulate them by using the other parameters. Competitor vehicles were tested to give valuable information on how the systems are working. The competitor vehicles were an Audi E-tron, which performed well in every curve with the CSA activated, and a Tesla Model 3, which had some issues finding the lines in one of the curves with the Autopilot activated.