Coping with the problem of the automobile cruise control system, a method based on fuzzy PID is proposed. Signal input device, CCS ECU and actuator etc are used to construct the control system. The PID fuzzy control algorithm is proposed. The fuzzy rules and proportion factor of fuzzy output are optimized in MATLAB. It retains the advantages of conventional fuzzy control and meanwhile, it is improved the performance of cruise control system. It proposes fuzzy PID control as control basis. It builds the automobile longitudinal force model of PID and simulated the validation and control effect of system in MATLAB. The results analysis shows that increased in the average response time. Automobile experiment indicates that the system work effectively and stably.Cruise Control System (CCS). Automobile cruise control system can reduce vehicle exhaust pollution and improve the dynamic performance and automobile ride comfort, etc. Automobiles cruise control system has the very strong nonlinear and uncertainty, and the traditional proportionalintegral-derivative (PID) can't meet the actual speed cruise control requirements. Automobile cruising system research key is to find suitable cruise control algorithm, make fixed speed cruise control performance is good. In order to improve the precision and stability of the vehicle CCS, to optimize the fuzzy control rules and online output scale factor, and can both retain the advantages of the traditional fuzzy control, and can effectively improve the cruise control system of the quality control, so is put forward based on MALTLAB and fuzzy PID adaptive fuzzy control method. [1][2][3][4][5][6] I.
AUTOMOBILE CRUISE CONTROL SYSTEM BASED ON MATLAB AND FUZZY PIDA. Traditional PID control in the automobile cruise control CCS is comprised of signal input device, cruise control electronic control units and actuators, etc. When the automobile all sorts of relevant sensors and switches take signal into CCS electronic control units, electronic control units will calculate engine the throttle valve, and control actuator work, to automatically adjust the engine the throttle valve.PID control is proportional-integral-derivative. It is based on the actual automobile driving and deviation between the set speed, reference for the past, present, and future conditions such as estimates, to realize the system parameters of the same automobile cruise control. In the course of driving automobiles, automobile driver set a speed value input to controller, when the wheel speed sensors take speed the actual value into controller, PID will get the set speed value and the actual value of the deviation between the speeds. The proportional control of controller is according to the size of the speed value deviation and output corresponding control quantity, to control the launch the throttle valve, which makes the speed approaching have set the speed limit value. The integral control of controller is by strengthening the control and reducing the speed of the deviation of the cumulative speed deviation, which m...