基于自适应模糊PID的液控稳频水流发电系统研究

Hydraulic-Controlled Frequency Stabilized Water Flow Power Generation System Based on Self Adaptive Fuzzy-PID

针对现有液控稳频自然水流发电装置控制系统响应时间长,控制精度不足,超调量大,达到稳态时间过长等不足,提出了一种基于自适应模糊PID的液控稳频水流发电系统,对变排量马达及其变排量机构进行数学建模,推得传递函数,通过MATLAB工具箱设计了模糊控制器,利用控制变量思想对控制系统进行仿真,对比传统PID和模糊PID的仿真结果得出结论:采用自适应模糊PID的液控稳频水流发电系统有更好的控制精度,超调量小,达到稳态时间更短、鲁棒性强等优势。

Aiming at solving the problems of long response time,insufficient control accuracy,large overshoot,and long time to reach the steady state of the existing hydraulic-controlled frequency stabilized natural water flow power generation system,a new power generation system based on adaptive Fuzzy-PID is proposed.Mathematical model of variable displacement motor and its variable displacement mechanism is established and the transfer function is obtained.A fuzzy controller is designed through the MATLAB toolbox and the control system is simulated by using the idea of control variable.Comparing the simulation results of traditional PID and Fuzzy-PID,we conclude that the hydraulic-controlled frequency stabilized water flow power generation system using adaptive Fuzzy-PID has the advantages of better control accuracy,small overshoot,shorter time to reach steady state,and strong robustness.