森林工程2017，Vol.33Issue(4)：44-48,5.
变论域模糊PID在微碳汇测量系统中的仿真研究
Simulation of Variable Universe Fuzzy PID in the Micro Carbon Sink Measurement System
摘要
Abstract
In the study of micro carbon sink,it is necessary to analyze the carbon conversion ability of plant under different temperature.For the problems such as nonlinear,time-varying and hysteresis of temperature in micro carbon sink measurement system,an improved variable universe fuzzy PID control method was proposed.Piecewise function was used as contraction-expansion factor to realize the equivalent contraction and expansion of universe.The contraction-expansion factor ensured control accuracy while reducing the computational steps so as to reduce the lag of the system and improve the real-time performance of system response.The PID controller,fuzzy PID controller,improved variable universe fuzzy PID controller were simulated and analyzed by MATLAB/Simulink.The simulation results showed that with the improved variable universe fuzzy PID temperature control system,the adjust time is short,the maximum overshoot is small and the tracking ability is good,which can provide a good basis for studying the relationship between plant carbon sink capacity and temperature.关键词
微碳汇/变论域/模糊PID控制/伸缩因子Key words
Micro carbon sink/variable universe/fuzzy PID control/contraction-expansion factor分类
农业科技引用本文复制引用
于越,宋文龙,王琢..变论域模糊PID在微碳汇测量系统中的仿真研究[J].森林工程,2017,33(4):44-48,5.基金项目
国家自然科学基金项目(31470714) （31470714）
