新结构LADRC在变循环发动机解耦控制中的应用

摘要

在线性自抗扰控制器（ LADRC）中增加了一个新的线性扩张状态观测器（ LESO），使用虚拟控制量的数据和输出数据来观测对总扰动的估计误差，提出了一种新结构的LADRC。将变循环发动机控制回路之间的耦合视为总扰动的一部分，使用三个LADRC实时地观测回路中的总扰动并在控制信号中进行补偿，实现了三个闭环控制回路的解耦控制。分别使用传统LADRC和新结构LADRC实现了解耦控制系统。仿真研究显示：基于LADRC的变循环发动机解耦控制具有较好的抗扰性能，使用新结构LADRC 的解耦控制具有更好的解耦效果和抗扰性能。%Absrt act:A new linear extend state observer ( LESO) was added to the linear active disturbance rejection controller ( LADRC) .The information of virtual control value and output was used to observe the estima-ting error of the total disturbance.A new structure of LADRC were proposed.The coupling among variable cycle engine control loops was treated as part of the total disturbance .Through estimating total disturbance of the loop in real time and compensating it in the control signal by three LADRCs,three closed control loop were decoupled.The traditional structure LADRC and new structure LADRC were used respectively for building the decoupling control systems.The simulation research showed that disturbance rejection performance of the variable cycle engine decoupling control systems based on LADRC was good.The de-coupling control systems built by LADRC with new structure had better decoupling effect and disturbance rejection performance.