Research On Combustion Temperature Monitoring Of Aerospace Engine Combustion Experimental System

The competition of national strength among major powers in the world has gradually developed from competition in science and technology,finance,and military to competition in space science and technology.The development of space science and technology plays an extremely important role in the exploration of the universe and the collection of ground information.With the vigorous development of the world economy,people pay more and more attention to the healthy and green development of the economy,and the technological innovation of aerospace technology,which is a highly polluting field,is also imminent.HAN-based is an ideal aerospace fuel with high specific impulse and no pollution.This thesis designs a monitoring system for the combustion process of HAN-based engines based on the research on the characteristics of the combustion process of a new type of non-toxic and non-polluting fuel.The PID algorithm for combustion temperature control is improved by using the adaptive adjustment algorithm particle swarm algorithm and fuzzy control algorithm.This thesis firstly selects and designs the structure of the whole combustion measurement and control system.According to the requirements of the control accuracy and the number of input and output ports of the combustion experiment,two high-performance Advantech industrial computers were selected in terms of hardware.The upper computer IPC1 is mainly used to monitor the operation of the entire combustion experiment system,and the IPC is mainly used for mass spectrometry.instrument monitoring.The Wincc configuration software of Siemens is installed on the IPC1,which is used to calculate,process,analyze and monitor the operation data of the combustion experiment system,and display it in graphics,curves and tables.It also realizes the storage and storage of historical data.Query,and use the mouse to manually or automatically control the running and stopping of all equipment of the engine combustion experiment system on the monitoring screen of IPC1.The lower computer adopts Siemens’ S7-1500 high-performance PLC,which can communicate with two IPCs through industrial Ethernet.Portal V16 software is also installed on IPC1,which can program,modify and debug the program and data of the lower computer PLC.PLC is mainly used to measure and control the pressure,flow,temperature sensors,solenoid valves,electric control valves and other equipment of the engine combustion experiment system.The IPC1 can also communicate with the IPC via Industrial Ethernet and monitor the mass spectrometer.Then this thesis adopts the commonly used PID controller parameter tuning method to control the temperature of the burner.Because the traditional PID does not have the property of self-adaptive tuning parameters,this thesis adopts a bionic algorithm particle swarm algorithm.According to the model of this experiment,Matlab simulation was carried out with traditional PID and particle swarm PID respectively.less time.Finally,based on the time-varying characteristics of the combustion model,a fuzzy control system that does not require high accuracy of the system model is adopted in this thesis.A fuzzy controller is designed by combining the fuzzy theory of fuzzy control with the traditional controller,and Matlab simulation of the parameters in the combustion process is carried out.Comparing the traditional PID controller and the particle swarm PID controller,the fuzzy PID controller has the best performance,followed by the particle swarm PID controller,and the traditional PID controller has poor performance.