鲁棒控制用于涡喷发动机控制器设计

基于LMI(LinearMatrixInequality,线性矩阵不等式)的方法,将PID控制律与鲁棒技术交叉结合,考虑了控制受限条件,提出了一种基于LMI的输出反馈PI控制器分段设计的切换方法。这一技术应用于某型涡喷发动机全功能的数字式电子控制器的稳态控制中,并介绍了该型涡喷发动机控制系统的组成,包括硬件、软件、步进电机执行机构及燃油计量装置。设计的电子控制器在发动机半实物仿真平台上进行了鲁棒性能的验证,实现了电子控制器的等转速调节功能和逻辑监控保护功能,满足涡喷发动机多功能FADEC控制要求。

Application of Robust Control to the Design of Jet Engine Digital Controller

Based on the LMI (Linear Matrix Inequality) method,the PID (Proportional Integral Derivative) control law was combined with robust control technique,and the subsection switch skill of PI output feedback control design with constraint of control input for aero-engine was proposed.The technology was applied to the steady state control of the full function digital electronic control system of a jet engine.The constitution of the system,including hardware,software,step motor actuating mechanism and fuel metering device,was introduced.Electronic controller not only can control the rotating speed stable but also have enough logic,multiple control monitor and protective functions.It fulfills all requirements of multiple FADEC control.The designed electronic controller has been carried through robust validity check on the engine semi-hardware-in-loop simulation platform.