多机电力系统汽门开度直接模糊backstepping控制  

Direct Fuzzy Backstepping Control for Turbine Main Steam Valve of Multi-machine Power System

作　　者：蔡静雯[1] 孙丽颖[1] 

机构地区：[1]辽宁工业大学电气工程学院,辽宁锦州121001

出　　处：《辽宁工业大学学报（自然科学版）》2014年第6期351-355,359,共6页Journal of Liaoning University of Technology(Natural Science Edition)

基　　金：国家自然科学基金青年基金项目(61104070);辽宁省高等学校优秀人才支持计划(LR2013028)

摘　　要：将backstepping方法与直接模糊方法相结合来研究多机电力系统汽门开度控制的稳定性问题。控制器设计过程中未对系统进行任何的线性化,所以保留了系统原有的非线性特性,而且用模糊逻辑系统逼近系统中未知的参数以及耦合项部分,最后基于Lyapunov理论证明系统的状态变量都是有界的,从而达到整个系统的稳定。用MATLAB对两机系统进行仿真,仿真结果表明,所设计的控制器最终能使系统达到稳定。The transient stability problem on multi-machine power system was studied by the means of backstepping control and direct fuzzy logic method. Since the process of the controller design has been without any linearization, the nonlinear property of the dynamic is preserved. And fuzzy logic system was used to approximate the unknown function. For the system state variables were verified to be all bounded based on Lyapunov theory, the complete system was of stability. Both systems were simulated with MATLAB. The simulated result shows that the controller designed hereby is able to cause the system to reach stability.

关 键 词：汽门开度 BACKSTEPPING方法 直接模糊 LYAPUNOV理论 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]