航空学报 > 2006, Vol. 27 Issue (6): 1046-1050

航空发动机解耦控制器设计

李秋红, 孙健国   

  1. 南京航空航天大学 能源与动力学院, 江苏 南京 210016
  • 收稿日期:1900-01-01 修回日期:2006-05-25 出版日期:2006-12-25 发布日期:2006-12-25

Aeroengine Decoupling Controller Design

LI Qiu-hong, SUN Jian-guo   

  1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:1900-01-01 Revised:2006-05-25 Online:2006-12-25 Published:2006-12-25

摘要: 提出了一种基于输出拟形的解耦控制器设计方法。设计过程中针对某型涡扇发动机双变量控制系统,首先选取2个理想的一阶环节形成2个独立控制回路,以其在各通路单独阶跃下的无耦合响应为拟形目标。以LQR控制器设计为例,采用遗传算法(GA)来优化LQR控制器的加权矩阵Q和R,使闭环控制系统在各控制回路单独阶跃下的输出与目标相一致,从而达到解耦的目的。通过优化算法,设计出的LQR控制器取得了良好的动、静态解耦效果。

关键词: 航空发动机, 解耦, 输出拟形, LQR控制器, 遗传算法

Abstract: The decoupling controller design method based on the output shaping is presented in this paper.For a double variable control system of certain turbine-fan engine,two first order systems are selected to make two independent control paths.The responses of this two paths have no coupling.The step outputs of the two independent paths are assumed to be chosen to be the target outputs of the close-loop control system.Using the design process of LQR controller as an example,the weighting matrixes Q and R of the LQR controller can be obtained through genetic algorithm (GA) optimization.Then the step output of the LQR close-loop control system designed by the optimal Q and R can be consistent with the target output.Through the optimization algorithm,the control system with the LQR controller gets very well dynamic and steady state decoupling performance.

Key words: aero-engine, decoupling, output shaping, LQR controller, genetic algorithm

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