基于H2/H∞混合优化的锅炉汽温分数阶PIλDμ控制  

Fractional-order PIλDμ Control of Boiler Steam Temperature Based on Mixed H2/H∞ Optimization

作　　者：王东风[1] 王松[1] 

机构地区：[1]华北电力大学自动化系,保定071003

出　　处：《动力工程学报》2014年第3期210-215,共6页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(61203041);中央高校基本科研业务费专项资金资助项目(11MG49)

摘　　要：针对分数阶控制系统参数整定方法不够成熟的问题,提出一种优化确定分数阶PIλDμ控制器参数的方法.同时考虑跟踪性能、抗干扰能力及鲁棒性的要求,基于H∞性能指标约束下的H2性能指标极小化,采用粒子群优化算法寻优,得到符合H2/H∞混合性能指标的最优PIλDμ控制器参数,并将其应用于循环流化床锅炉汽温的分数阶PIλDμ控制器参数设计.结果表明:所设计的控制器具有良好的定值跟踪能力、抗干扰性能及较强的鲁棒性.To improve the accuracy of parameter tuning in fractional-order control system, an optimized method was proposed for parameter determination of fractional-orderPIλDμ controller. By simultaneously considering the tracking accuracy, anti-interference capability and robustness, the H2 performance index was minimized via particle swarm optimization （PSO） algorithm with constraints of H∞ performance in dex, and then the parameters of optimized PIλDμ controller were obtained based on mixed H2/H∞ optimiza tion, which was subsequently applied to steam temperature control of a circulating fluidized bed boiler. Re sults show that the optimized PIλDμ controller has good set-point tracking and anti-interference capability and strong robustness.

关 键 词：分数阶控制系统 主蒸汽温度 H2 H∞混合优化 PIλDμ控制器 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]