基于Smith预估的模糊自适应PID除氧器控制研究  

Study on Fuzzy Adaptive PID Deaerator Control Based on Smith's Prediction

作　　者：屈晓宇 陈正伟 QU Xiaoyu;CHEN Zhengwei(Higher Educational Key Laboratory for Flexible Manufacturing Equipment Integration of Fujian Province,Xiamen Institute of Technology,Xiamen 361021,Fujian Province;School of Mechanical Electrical and Information Engineering,Xiamen Institute of Technology,Xiamen 361021,Fujian Province)

机构地区：[1]厦门工学院柔性制造装备集成福建省高校重点实验室,福建厦门361021 [2]厦门工学院机械电气与信息工程学院,福建厦门361021

出　　处：《沈阳工程学院学报（自然科学版）》2024年第4期68-73,96,共7页Journal of Shenyang Institute of Engineering:Natural Science

基　　金：国家自然科学基金区域联合重点项目(U21A20483);厦门市自然科学基金联合项目(3502Z202374090);厦门工学院院级项目(201/XJYKT22004);厦门工学院院级教改项目(201/XJYJG23026)。

摘　　要：除氧器是保证锅炉给水中含氧量达标的重要设备,针对其温度控制系统中存在的大滞后和非线性问题,提出基于Smith预估的模糊自适应PID的控制策略。该方法通过模糊理论实现PID参数的自整定,使其更加适应系统的非线性变化,引入Smith预估控制提前补偿系统滞后,提高控制效果。利用SIMULINK建立了仿真模型,对控制系统进行验证。结果表明:与传统的PID控制和模糊自适应PID控制算法相比,该方法在超调量和调节时间上均表现出色,且具较强的稳定性和鲁棒性。The deaerator is an important equipment to ensure that the oxygen content in the boiler feed water meets the standard,and the method of fuzzy adaptive PID control based on Smith prediction is proposed for the large hysteresis and nonlinear problem in its temperature control system.The method achieves self-tuning of PID parameters through fuzzy theory to make it more adaptive to the nonlinear changes of the system,and introduces Smith prediction control to compensate the system hysteresis in advance to improve the control effect.A simulation model is established using SIMULINK to verify the control system.The results show that compared with the traditional PID control and fuzzy adaptive PID control algorithms,the method performs well in terms of overshooting amount and regulation time,and has strong stability and robustness.

关 键 词：除氧器 Smith预估 模糊自适应PID 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]