Design And Realization Of Temperature And Pressure Reduction Control System

Whether for utility or industrial boiler, temperature and pressure reduction control system is an indispensable part of the boiler equipment. It is important for realizing the technical process of boiler, ensuring the safe and stable operation of equipment and improving the economic performance of equipmentTemperature control system for nonlinear,time delay,time-varying features,the traditional PID control strategy is difficult to obtain satisfactory control quality,and can not meet the actual demand.The robustness of fuzzy control is good,but the time delay and change of control object parameters are not sensitive to cause steady-state error easily.Effective combination of the classical PID control algorithm and fuzzy control algorithm,a fuzzy self-tuning PID control algorithm while maintaining PID control the steady-state error is small,good stability advantages,but also has fuzzy adaptive speed control and adjustment features.In this paper,the measuring circuit of temperature and pressure are designed by using the sensor,monitoring and transmitting the parameters into the PLC controller at any time, in order to realize the real-time monitoring and regulating function of the steam,according to the change of the parameters,it can be automatically controlled by the programmable controller.Integrating PLC and configuration software technology,a multi-function and comprehensive PLC control system has been designed.This paper presents a simulation of the PLC control system based on fuzzy-PID control algorithm at MATLAB environment.The results show that the PLC control system based on fuzzy-PID control algorithm effectively increases the system capacity on nonlinear, time-variable and uncertain,which achieved anticipated effect.