The Study Of Automatic Parking System Of The Four-wheeler Automobile

With the rapidly growing of our country's economy,the automobile industry develops quickly,and the owning of city mobile cars is increasing sharply.At the same time,the parking space can attain this piece only of half even less,so it brings many problems such as parking difficulty.Using the automatic parking system can make fully use of space,increase the parking quantity of the unit area.It provides a kind of valid means for solving the parking difficulty.When you driving the four-wheeler automobile,you need to control the steer device,clutch,brake and accelerator,and you also need to observe the peripheral pedestrians,vehicles and the stumbling blocks.It is not easy for not well-trained pilot, particularly parking in big cities.Parking technique problems,such as the action slowly, colliding with the other cars carelessly,or turning with an error angle,may cause traffic jam.Therefore,it is very meaningful to use automatic parking system to help the not well-trained pilots to park the car smoothly in a short time.This thesis is base on theories of the fuzzy theory and fuzzy control and the four-wheeler car characteristic.It picks up the traveling path and driving rule to construct the stratum type automatic parking system through the analysis of the experience of people parking operation.The route enactment machine sets up the traveling path by the current position information,the target coordinate information,and the peripheral stumbling block information.Then it transports the result to the knowledge controller.The knowledge controller selects the suitable operation to arrive a target place by fore-fuzzy control to realize the automatic parking.This thesis also describes the design and realization of the system's performance mechanism.At last it simulates the automatic parking system by MATLAB/Simulink simulating technology.This automatic parking system is according to the advance fore-fuzzy control technology,it will be more excelled then the system bases on the simple fuzzy control. And by the analysis of the experienced driver's parking flow in order to pick up the traveling path information and the driving operation rule,it lets the driving operation close to the real operation.It can satisfy the driver's need with the practicability and facility.