Research On The Test And Evaluation Method Of Autonomous Emergency Breaking System

Traffic congestion and traffic safety have become the key topics of global concern with the increasement of global car ownership and the volume of traffic on roads.In recent years,with the rapid development of automobile industry and national economy,China has done well in automobile industry.However,the number of traffic accidents and the death rate of traffic accidents have also remained high.This problem has become an urgent problem.The study found that most accidents are caused by the driver’s inattention.The automatic emergency braking system can effectively avoid or even reduce the occurrence of such accidents,so the development and test evaluation of this system is of great importance.In this paper,the testing scenarios and evaluation methods of the automatic emergency braking system are taken as research objects.The main work contents are divided into the following points:First,according to the types of traffic accidents and the percentage of accidents in China,and in combination with existing research results at home and abroad,a comprehensive test scenario for automatic emergency braking systems in accordance with China’s actual conditions has been established.There are three main types of testing scenarios: car-car scenarios,carpedestrian scenarios,and car-two-wheelers scenarios.And the test scenarios,test methods,and test requirements are analyzed for each working condition in each type of scenario.Secondly,the fuzzy comprehensive evaluation method of automatic emergency braking system based on analytic hierarchy process(AHP)is introduced.An evaluation system for the automatic emergency braking system is established,the performance evaluation index included: AEB action time TTC(Time to collision),maximum braking deceleration,test car speed reduction percentage,and relative stopping distance.The steps and processes of AHP and fuzzy comprehensive evaluation method is analyzed in this paper.And based on AHP,a hierarchical structure model of test scenarios for automatic emergency braking system is established.The judgment matrices of target layer O to criterion layer A,criterion layer A to criterion layer B,criterion layer B to criterion layer C,and criterion layer C to index layer Z are established,and their weights and consistent test are calculated.Then,the feasibility of fuzzy comprehensive evaluation model of automatic emergency braking system based on AHP is verified.Through the Pre Scan-Simulink joint simulation,the evaluation index simulation data is obtained.The evaluation method built in this paper is compared with the evaluation methods of mainstream test institutions at home and abroad.The consistency test proves that the fuzzy comprehensive evaluation model based on AHP built in this paper is proved.Feasibility.Finally,the application of fuzzy comprehensive evaluation model of automatic emergency braking system based on AHP.Taking a car-car collision scenario as an example,the simulation obtains the data required for each working condition evaluation index in the car-car collision scenario,and then performs multi-level fuzzy comprehensive calculation according to the evaluation model established in this paper,and obtains the car-car collision scenario.Evaluation result of automatic emergency braking system.