Design And Research Of Longitudinal Control System Of Unmanned Racing Car

With the rapid development of social productivity and automobile technology,the number of automobiles is increasing year by year,and the traffic problems of traditional drivers are also increasing.Driverless technology and driverless cars are the crystallization of the development of human automobile industry,representing the highest level of technology in the field of automotive research at present,and also the trend of future automotive development.In addition,With the development of conventional driverless vehicle technology,the trend of driverless formula university car racing is becoming more and more obvious.As one of the key technologies of the driverless car,the longitudinal control system of the driverless car is the basis for the realization of the driverless car of formula student.In conclusion,it is worthwhile to design and study the characteristics of the longitudinal control system with high stability and reliability is.This paper takes the longitudinal control system of driverless racing car as the main research object.Firstly,taking the pure electric formula racing car as the platform,this paper analyzed and determined the layout plan of the driverless racing car,carried out the structural design of the modified part of the racing car,analyzed the relevant sensing system equipment used in the racing car,and calculated the matching parameters of the whole car system.Secondly,after studying the driverless car longitudinal dynamics analysis,on the basis of design a set of including driverless car based on incremental PID control algorithm based on fuzzy adaptive speed control system,control algorithm of driverless car brake control system,considering the road brake control and zero threshold area and the accelerate or deceleration switch control system of three systems,unmanned car longitudinal control system.Finally,the paper analyzes the unmanned formula project,through the construction of carsim-simulink simulation platform,under the condition of road surface close to the real track for unmanned longitudinal control system highly close race condition simulation experiment,reduce the distortion error of the impact because the simulation conditions,driverless car design in this paper is verified the effectiveness and stability of thelongitudinal control system.This paper aims at the design and research work of the longitudinal control system of the driverless formula car,which is of great significance to the project team and the research and development work of the driverless formula car in our school.It is the first time for our school to involve in the research work of the driverless formula car,and fills in the blank of the theoretical research on the technology of the driverless formula car in our school.