ABSTRACT
PID control was widely used in the industry control,because of having a simple structure,low cost ,good stability,reliable operation and easy adjustment.but for objects have large transitional time and condition is instablity of the occasions,the general PID Control can eliminate steady-state error,but it will appear large oscillation and need long time to stablity, in this case,the fuzzy control can achieve better results,using Fuzzy Parameter self-regulation PID control,which can accord to the change of conditions adjusting the three parameters of PID control ,the most important thing is online and in time,can achieve better control to solve large oscillation and long transitonal time problem.
Taking the air-conditioned passenger compartment as subject investigated，both PID and Fuzzy control methods are used to control the temperature in the chamber.
Using SIMULINK toolbox established the control system simulation model of MATLAB,and make the simulation curves,comparing the general PID and Fuzzy control ,proving the Fuzzy control having a good advantage in prolong the transitional time and condition is instablity of the occasions.
Key words: PID control,Fuzzy control,Temperature control ,SIMULINK,control simulation.
