蒸汽发生器水位控制器的多目标GA和静态H_∞回路成形优化设计  

Multi-objective GA and Static H_∞ Loop-shaping Design of Controllers for Steam Generator Water Level

作　　者：周世梁[1] 刘玉燕[2] 段锋 

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]华北电力大学控制与计算机工程学院,北京102206 [3]中广核工程有限公司,深圳518124

出　　处：《动力工程学报》2013年第2期123-129,共7页Journal of Chinese Society of Power Engineering

基　　金：中央高校基本科研业务费专项资金资助项目(10MG34)

摘　　要：提出了一种基于多目标遗传算法和静态H∞回路成形综合的给定结构鲁棒控制器设计方法,采用该方法设计了低负荷下蒸汽发生器水位的比例微分串联滤波器型控制器,并进行了水位给定值阶跃变化、蒸汽流量阶跃扰动和给水压力波动下控制系统响应的仿真试验.结果表明:所设计控制系统的鲁棒稳定性和鲁棒性能优于其他3种基于H∞回路成形的控制器设计方案;所得控制器在给定值阶跃变化、给水和流量扰动下均能保持较好的控制品质,具有良好的鲁棒性.A design method was proposed for robust controller with given structure based on multi-objec- tive genetic algorithm （GA） and static H∞ loop shaping procedure. Using the method, a controller for steam generator water level at low load with structure of proportional-derivative cascaded filter was de- signed, with which simulation tests were carried out on response of the control system under step changes of both the water level and steam flow as well as at pressure fluctuation of the feed water. Simulation re- sults show that the robust stability and performance of the designed control system are better than those of other three H∞ loop shaping based schemes, via the derived controller, higher control quality and stronger robustness may be obtained under given step changes of feed water and steam flow.

关 键 词：蒸汽发生器 水位控制 静态H∞回路成形 多目标遗传算法 鲁棒性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]