航空发动机分布式控制系统时延/丢包鲁棒性分析

为了定量描述航空发动机分布式控制系统对于时延/丢包的鲁棒性，开展了分布式控制系统鲁棒性分析研究.针对能够同时刻画时延和丢包控制系统模型，以线性矩阵不等式的形式给出了稳定性判据；使用区域极点配置技术设计控制增益矩阵，并对极点位于不同区域的闭环系统进行了时延/丢包稳定裕度的求解和验证；从时延/丢包鲁棒性及动态性能的角度对闭环极点的配置区域选取进行了探讨.仿真结果证实了该稳定性判据的有效性，进一步分析结果表明:当闭环极点被配置在-4附近时，系统具有最强的时延/丢包鲁棒性.综合考虑控制系统对于时延/丢包鲁棒性和动态性能的要求，可以将闭环极点配置在圆心在-8和-4之间、半径为1的圆盘区域内. 

Transmission delay/packet dropout robustness analysis of distributed control system of aero-engine

Research on the robustness analysis of distributed engine control system was conducted to describe the robustness quantitatively. Stability criterion for control system model considering transmission delay/packet dropout was simultaneously presented in linear matrix inequality form. Gain matrix was designed utilizing regional poles assignment technology, and the delay/packet dropout margin of closed-loop systems with poles in various regions was solved and verified. Discussion was extended to the closed-loop poles region selection in terms of delay packet dropout robustness and dynamic performance. Simulation confirmed the validity of the stability criterion. Further analysis result showed that the strongest delay/packet dropout robustness was obtained when closed-loop poles were assigned near -4. Considering the control requirements of delay/packet dropout robustness and dynamic performance comprehensively, it was feasible to place closed-loop poles in disk area with center between -8 and -4 and radius of 1.