Research And Development Of ADAS Experimental Platform

With the development of human society and the improvement of economic and technological levels,the automobile industry has developed rapidly,and the degree of automobile intelligence has gradually increased.As people pay more and more attention to road traffic safety issues,how to improve automobile active safety technology has become the focus of major car companies and universities.Research on advanced assisted driving can not only reduce traffic accidents and property losses,but also lay a solid foundation for driverless technology.Advanced assisted driving is the trend of future vehicle development.This subject relies on the development of a high-performance ADAS experimental system(project number: JP2016004)of the major science and technology platform science and technology research project of the Liaoning Provincial Department of Education Higher Education Institute for the development and research of the ADAS experimental platform.The experimental platform is based on the NI real-time simulation system and Car Sim RT as the core,to study the control strategy and control algorithm of ADAS and its subsystems,and to analyze the vision,radar signal analysis and data fusion of related signals.Compared with traditional vehicles,the ADAS experimental platform does not need to consume a lot of manpower,material resources,and weather,terrain and other environmental impacts when conducting road tests.It also does not have a series of traffic accidents under extreme conditions.Therefore,this paper studies the development of ADAS experimental platform.The main research contents are as follows:Firstly,design the overall plan of the ADAS experiment platform.According to the functional requirements of the ADAS experimental platform,design the ADAS experimental platform program and introduce the role of each component,design the working principle of the ADAS experimental platform,and determine the working process of each component.Secondly,the hardware system design and selection of ADAS experiment platform.Mainly design the mechanical structure of the driving simulator,including the design and construction of the driving simulator base bracket,center armrest,acceleration and brake pedal;angle sensor,acceleration sensor,brake sensor,industrial camera,radar,steering actuator and Selection of control system.Thirdly,realize the communication,image acquisition,corresponding software settings and joint simulation settings of each software in the ADAS experimental platform software system.Mainly for designing the overall scheme of the software system,according to the software system design scheme,the data communication between the various control systems(mainly CAN communication and local area network communication)is realized.After the control system communication is realized,the industrial camera is used for image acquisition.The servo motor communicates and builds its corresponding Simulink control model according to the CAN communication protocol.Understand the functions of NI-Veristand,Car Sim,and MATLAB/Simulink software in the ADAS experiment platform,and set the corresponding settings for each software,such as Simulink model compilation settings,Car Sim software parameter selection,etc.,and finally realize the joint simulation settings between each software.Finally,the development of ADAS experimental platform functions,including driving simulation function and active steering function.Development of the driving simulation function,data calibration of the steering system,acceleration system and braking system sensors in the driving simulator,and the establishment of a road feedback control model,which is to feedback the current road information to the driver during the simulated driving process member.Active steering function development.Active steering uses a pure tracking algorithm to calculate the steering wheel angle,which is transmitted to the steering execution motor through CAN communication to control the steering wheel rotation and realize the auxiliary driving function.The development of this function is mainly to verify the feasibility of the steering execution motor in the steering system,and lay the foundation for the later development of the ADAS subsystem,such as the development of ACC,APA and other systems.