Vehicle Running State Detection And Control Strategy Research Of The Active Collision Avoidance

Traffic accidents due to collision increases, go with vehicle total number growth and speed increase, therefore, traffic accidents draw more and more attention. Theoretically, traffic accidents can be defined passive safety and active safety. Although passive safety system can lighten the damage of traffic accidents, it cannot prevent the accidents, so, active safety system will surely develop a new trend.This dissertation,based on the study of the Collision-Avoidence Intelligent control strategy at home and abroad, is on the issue of the vehicle running state montoring and braking control modeling, and the main research contents are as follows:Firstly, the paper confirm from the detector comparation that MM-Wave rader is absolutely the best choice of the detector as it's the unique characteristic.Secondly, The traditional active Collision-Avoidance control model based on the safety distance cannot effectively embody the drivers'brake traits in the braking control system. This paper has analyzed the causes of the fuzzy problems from the perspective of complex systems modeling, and it is drawn that the FNN used in the vehicle braking modeling is feasible.In this paper, it is focused on how to construct a suitable FNN model for vehicle braking control under the premise that the characteristics of the braking control system is not clear enough. Then the auther deduced the learing algorithm of FNN, and it is proved that the model has the characteristics of the overall approach in theory. Consequently, choosing a part of abundant brake data of the driver in different traveling conditions to train the neural network parameters online and optimize network weight to build a fuzzy neural network controller model which embodying the drivers'brake traits.Ultimately satisfy the different brake habit of the driver.Lastly, In order to verify the validity of the FNN structure used in the vehicle braking control modeling, in this paper, the vehicle dynamic model was used as an control object, then,Simulation was carried out on the vehicle dynamic model which was developed in Matlab/Simulink and the result illustrates that vehicle control strategy of the active Collision-avoidance based on the FNN is feasible.