WANG Yue-sheng，HONG Shi-jie
（Institute of Information and Control，Hangzhou Dianzi University，Hangzhou 310018，China）
Abstract：In order to improve the control accuracy of pouring pot temperature in booster production line and the quality of boosterproduct，the components of pouring pot temperature control system in booster production line were analyzed. The fuzzy control andconventional PID control were combined together，then a fuzzy PID controller was designed. Through the past experience of pouring pottemperature control，the fuzzy control rule table of the three parameters of PID was formulated. Finally the fuzzy control algorithm wasrealized by the programming of programmable logic controller. MoreoversimulationcomparisonbetweenthefuzzyPIDcontrollerandconventionalPID controller was made in Simulink toolbox in Matlab. The results indicate that compared with conventional PID controller，the fuzzy PID controller has better regulation precision. Applied to the actual production line，the results indicate that fuzzy PID control isbetter，achieve the desired temperature control requirements，which is applicable to temperature control of pouring pot in boosterproduction line and has great significance for improving the quality of primer product and production efficiency.
Key words：booster；fuzzy control；PID；temperature control；PLC