Research On Automatic Correction Control System Of Lane Departure

Nowadays,due to the development of the economy,more and more people have their own cars,the car has gradually become a very important means of transport in people’s lives,but the traffic safety problem has become more and more serious.How to strengthen and improve the active safety of vehicles has gradually become the main research contents by the major vehicle manufacturers,parts manufacturers and research institutes.In this paper,the automatic control system of lane departure is taken as the main research content,the key algorithms of the system are studied and improved.1.Recognition of vehicle road boundary are the main research,this paper focuses on the whole process of vehicle road boundary recognition and acquisition,mainly through three procedures: vehicle road model construction,vehicle road boundary line feature point acquisition and processing,vehicle road boundary line acquisition.2.The lane departure time calculation model is established,which is based on the TLC decision model.The trajectory of the vehicle is divided into straight line and curve type.At the same time,combined with the theory of motor kinematics,geometric knowledge and trigonometric function,the actual driving trajectory of the vehicle on the straight road and the curve section is studied,the method to solve the lane departure time TLC is obtained.Because each driver is not the same,the paper divides the driver into three situations.According to the different types of drivers,multi-mode TLC pre-warning system is established to reduce the false alarm rate of the automatic correction control system of lane departure.And through the vehicle dynamics software CarSim and Matlab/Simulink simultaneous up simulation experiments,to illustrate the analysis of experimental results of simulation show that the warning algorithm is feasible,it can play a good role.3.The driver operation state judgment model is established.According to the size of the steering wheel torque and turn signal to determine when the vehicle off the lane,whether the driver is in the active control of the vehicle,to minimize the false alarm,so as to alleviate the problem of its conflicting with the driver’s intention.4.The active control algorithm of automatic correction control system of lane departure is established.The main principle is based on the vehicle’s true lateral position and the ideal side position deviation to obtain the optimal steering wheel angle,EPS system according to the corner control system to correct the direction of vehicle driving to ensure that the vehicle back to the original lane.In this paper,the driver model,vehicle model and electric steering model are established,and through the vehicle dynamics software CarSim and Matlab/Simulinksimultaneous up simulation experiments,to illustrate the analysis of experimental results of simulation show that the automatic correction algorithm is feasible,it can play a good role.