变论域自适应模糊滑模多变量控制算法及其在单元机组协调控制中的应用  

RESEARCH OF MIMO ADAPTIVE FUZZY SLIDING-MODE CONTROL WITH VARIABLE UNIVERSE AND ITS APPLICATION TO THE COORDINATED CONTROL SYSTEM IN UNIT

作　　者：侯国莲[1] 李泉[1] 张建华[1] 

机构地区：[1]华北电力大学控制科学与工程学院,北京市昌平区102206

出　　处：《中国电机工程学报》2005年第9期114-121,共8页Proceedings of the CSEE

基　　金：国家攀登 B 计划子课题项目资助(攀清 01-1-4);国家电力公司青年科技促进费项目资助(SPQKJ013)

摘　　要：为有效地处理多变量复杂系统,提出了一种新型多变量模糊控制器的设计方法。通过分析滑模控制机理,综合变论域模糊自适应控制的思想,提炼出简化通用的规则库,规则数只是输入变量的线性函数,可在线调节输入变量论域和规则后件隶属度函数,使所构成的控制系统具有很强的鲁棒性、较好的自适应能力和较高的控制精度。最后用于对300MW 单元机组协调控制系统进行了仿真实验,结果表明即使在机组工况点发生大的变化或受到较大干扰时,被控系统仍具有快速的负荷适应性、良好抗扰动能力和很强的鲁棒性。Based on integrating the property of sliding-mode control with the thought of variable universe in fuzzy controller, a novel MIMO fuzzy sliding-mode controller is proposed for complex multivariable systems. The rule-base designed is general and simple. By adjusting the universes of input variables and the membership functions of conclusion part in rules on-line, this multivariable fuzzy controller has strong robustness, better adaptive ability and high control precision. Finally, the proposed method is applied to the simulation of the coordinated control system of 300MW unit, and the simulation results show that the controlled system has quicker load-tracking ability and better characteristics of overcoming disturbances and stronger robustness.

关 键 词：单元机组 多变量 变论域 控制算法 滑模 模糊自适应控制 应用 协调控制系统 输入变量 模糊控制器 隶属度函数 自适应能力 300MW 复杂系统 设计方法 控制机理 线性函数 在线调节 控制精度 仿真实验 鲁棒性 规则库 工况点 

分 类 号：TM621.6[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]