Design And Research Of Intelligent Measurement And Control System For Small Incinerator

At present,the combustion process of the small incinerator system lacks supervision and has a low degree of intelligence,this paper develops a real-time measurement and control system for small thermal systems such as relic sacrificial incinerators,and studies the control strategy and operation of the system.The specific research includes the design of the overall scheme of the measurement and control system,the selection of the hardware and the development of the measurement and control software,the design and optimization of the control strategy,the MATLAB simulation research and the actual system operation test,realized real-time monitoring of various combustion parameters of the incinerator and automatic adjustment of furnace temperature.The measurement and control system adopts the overall design scheme of industrial control computer + intelligent instrument + RS485 communication.The system consists of incinerator body,various auxiliary instruments and measurement and control software.The control system takes the industrial control computer as the core,realizes the highly decentralized various functions of the system through intelligent instruments,and the system communication uses RS485 bus technology.The Interactive interface of the measurement and control software is developed by the C # Win Form form program,which has the functions of data acquisition,data processing,graphical display,control and adjustment.A control strategy research plan for a small incinerator intelligent measurement and control system is proposed.By modeling the dynamic characteristics of the incinerator system,the type of the transfer function is determined to be a first-order system with time delay.The specific parameters of the transfer function are solved using the tangent method and the two-point method,and the time constant T is 122 s,the ratio The amplification factor K is 1.25 and the delay time τ is 10 s.The Z-N method,CHR method and engineering setting method are used to set and modify the PID parameters.Based on the combustion characteristics of the incinerator,a fuzzy PID control strategy is designed.Through the above research process,a control strategy for the automatic adjustment of incinerator temperature is designed.The control strategy is verified by MATLAB Simulink simulation environment,the influence of PID parameters Kp,Ki,Kd on the system output is studied respectively,and the control effects of traditional PID adjustment and fuzzy PID adjustment are compared.Through a four-month field operation experiment,the integrity of system data acquisition,data storage,image display,valve control and other performances were tested,and the reliability of the continuous operation of the system was tested.The effects of the fuel supply circuit valve opening and the air distribution valve opening on the system output were studied.The superiority of fuzzy PID adjustment was tested through experiments.