Research On Test And Evaluation Method Of Autonomous Emergency Braking System

With the rapid development of active safety technology,and the application of Advanced Driver Assistance Systems(ADAS)products,the Autonomous Emergency Braking system(AEB)has become a hotspot in active safety research and ADAS product development because of its ability to avoid collision or slow down the collision speed directly through braking.As an important part of the automobile research and development process,the test and evaluation runs through the whole research and development cycle,so it is very necessary to analyze the test and evaluation method suitable for the development of AEB system.This paper stuided the test and evaluation methods that applied in vehicle AEB system development process.The existing evaluation methods of AEB system were analyzed,and the working principle of AEB system is studied.Then a vehicle model was established,including longitudinal dynamic model,inverse longitudinal dynamic model and millimeter wave radar model.Also the accuracy of the model was verified.At last,by using the combination of experiment and simulation,the site test scheme and the virtual test evaluation method suitable for radar selection in AEB system was put forward.The innovation of this paper mainly includes the following three aspects:1)In view of the outstanding problems encountered in the current AEB system test method,this paper has proposed an improved scheme based on Euro-NCAP test method,including two points: ○1 adding two parameters,including the millimeter wave radar recognition success rate and the collision success rate,for the AEB system performance evaluation;○2 increasing the minimum distance of two vehicles as the evaluation reference of AEB system performance.2)The paper analyzes the typical traffic conditions of the two vehicles in single lane,and puts forward three new test cases for the performance evaluation of AEB system: CCRb-(Car-to-Car Rear brake minus),CCRa(Car-to-Car Rear acceleration)and CCRb +(Car-to-Car Rear brake plus).3)The paper have evaluated the AEB system by using the vehicle model equipped three different range radars.In the virtual simulation,the evaluating rules consist of Euro-NCAP protocol,two new evalution parameter and three new test case.