带有可调喷嘴的分轴燃气轮机解耦器和控制器的设计—复变方法  

Design of Decoupling Compensators and Controllers for Split—Shaft Gas Turbines with Adjustable Nozzles—A Complex Variable Approach

作　　者：吕泽华[1] 

机构地区：[1]清华大学

出　　处：《热能动力工程》1989年第5期9-15,共7页Journal of Engineering for Thermal Energy and Power

摘　　要：本文简要介绍了将经典控制理论中行之有效的频率方法和根轨迹方法推广至多变系统的复变方法,以及用分频段补偿法设计解耦器和用超前校正环节进行多变量系统的校正设计的方法。带有可调喷嘴的分轴燃气轮机是多输入,多输出的系统,其内部存在复杂的相互间的交连,由其构成的多变量反馈控制系统是非最小相位系统,其解耦器和控制器的设计十分困难。本文以其为例,应用线性多变量反馈系统分析的复变方法分析其稳定性和设计解耦器和控制器,仿真计算结果表明,设计是较为满意的。This paper briefly describes a complex variable approach by means of whichthe useful methods of frequency and root locus can be extended to a multivariable feedback matrix.The decoupling compensator is designed by use of compensationin divided frequency ranges.A method of lead conoensation for multivariable feedbacksystems is also presented.A split-shaft gas turbine with adjustable nozzles is a nonlinear multi-inputand multi-output system,in which the couplings are so complicated that it is verydifficult to design decoupling compensators and controllers.In this paper,an exa-mple has been given to demonstrate how a decoupling compensator matrix and con-troller matrix is designed by use of the complex variable approach for such a lin-ear multivariable feedback system.The simulation computation results show thatsatisfactory results have been obtained.

关 键 词：燃气轮机 喷嘴 解耦器 控制器 设计 

分 类 号：TK472.62[动力工程及工程热物理—动力机械及工程]