Volume compensation of gas leakage detection system based on fuzzy PID control

XIONG Si-chang， CHEN Sha， HUANG Lin
（The Ministry of Education Key Lab of Mechanical Manufacture & Automation， Zhejiang University of Technology， Hangzhou 310014，China）

Abstract： The stability，detection precision and detection speed of the leakage detection system depends on the quality of volume-compensation control system. Aiming at the problem of setting weights overshoot decreased，but the process response rising time increased in the conventional PID，an adaptive setting weights fuzzy PID controller by referring to ZN tuning method was designed and optimized. The control system mathematical model was established to compare the simulation of fuzzy PID control with the simulation of optimized fuzzy PID control in Matlab/Simulink. Finally，detection system control software was designed by using the algorithm of fuzzy PID control and optimized fuzzy PID control as the volume-compensation control. Experiments were done with the software. Simulation and experimental results indicate that the optimal fuzzy controller can keep other performance index in good condition and prevent process overshoot well without reducing response speed at the same time.
Key words： gas leakage detection； volume compensation； fuzzy PID control