Research On A Fast-response Gaseous Temperature Control System

This paper describes a fast-response gaseous temperature control system and presents a self-regulating fuzzy algorithm of PID control. To achieve a signal of the gas temperature with higher degree of accuracy and less response time, both of flux and power of heating are controlled in the algorithm. Firstly, construction and working principle of fast-response gaseous temperature control system is expounded. The combination of hermodynamics and pneumatics servo control theory is used as modeling of the system. On the basis of the mathematical description of the system, the computer digital simulation on the system is implemented and the important parameters of the system are analyzed. Secondly, two kinds of control algorithms are applied to the system. Because of the serious nonlinearity, a classic control method (e. g. PID) is not suited for the system. And self-regulating fuzzy algorithm of PID control strategy is presented. The self-regulating fuzzy algorithm of PID control strategy, which can adjust the parameters of PID controller in real-time, is suited for the system. The self-regulating fuzzy algorithm of PID controller is designed successful. The researches of simulations are shown that the control schemas presented can improve the static and dynamic behavior of the system effectively. Finally, a fast-response gaseous temperature control system is designed and established. The computer control software is also carried out. The study to the fast-response gaseous temperature control system in practice is proposed. The experimental results show that it is practicable and reasonable to adopt the self-regulating fuzzy algorithm of PID control strategy in fast-response gaseous temperature control system. The control system has strong robustness, good adaptive ability, high steady control accuracy and fast response. The influence of variety of gas flux is also researched. Choosing the appropriate flux can not only improve the dynamic performance, but also reduce the burden of the running system. The researches lay an excellent foundation for working further development and practical application on the fast-response gaseous temperature control system.