航空涡轮喷气发动机双变量控制系统设计

一、涡沦喷气发动机双变量调节规律影响涡轮喷气发动机推力和耗油率的主要参数是转速和涡轮前温度。在最大工况下保持转速及涡轮前温度为最大值不变 ,可使发动机在各种飞行条件下最大限度发挥动力性能。作为高性能战斗机动力的双轴涡轮喷气发动机 ,最大工况下适宜采用的调节规律是 :n L =n L m ax =const　 ;　 T*3 =T*3 m ax =const　　本文研究的原准机在最大工况下只控制低压轴转速为常数 ,对涡轮前温度不进行调节。特性计算表明 ,T*3 将随发动机进气温度 T*1 的改变而变化。采用双变量调节规律 ,允许将台架 T*3 适当提高 (为提高到海…

A DESIGN OF A TWIN VARIABLE CONTROL SYSTEM FOR AERO-TURBOJET ENGINE

Under twin variable control with the equal low compressor speed and equal low turbine exit temperature,the twin spool turbojet can obtain higher power performance.In this paper,firstly,the engine dynamic model with two inputs and two outputs is deduced.Then with the aid of LQR theory,the optical regulator of twin variable control system is designed,and the approaches for processing some problems existed in the design process are recommanded.Finally,the control system designed in terms of optical method is simulated numerically.The results show that,in the condition of a state perturbantion on the system,the transient performance of the system recovered to original state is more satisfactory,and the variation of control mediators is in allowable limits of the controllers.