Design method of optimal control schedule for the adaptive cycle engine steady-state performance  

作　　者：Yihao XU Hailong TANG Min CHEN 

机构地区：[1]School of Energy and Power Engineering,Beihang University,Beijing 100083,China [2]Research Institute of Aero-Engine,Beihang University,Beijing 102206,China

出　　处：《Chinese Journal of Aeronautics》2022年第4期148-164,共17页中国航空学报（英文版）

基　　金：funded by National Nature Science Foundation of China(Nos.51776010 and 91860205);supported by the Academic Excellence Foundation of BUAA for PhD Students,China。

摘　　要：The alternative working modes and flexible working states are the outstanding features of an adaptive cycle engine, with a proper control schedule design being the only way to exploit the performance of such an engine. However, unreasonable design in the control schedule causes not only performance deterioration but also serious aerodynamic stability problems. Thus, in this work,a hybrid optimization method that automatically chooses the working modes and identifies the optimal and smooth control schedules is proposed, by combining the differential evolution algorithm and the Latin hypercube sampling method. The control schedule architecture does not only optimize the engine steady-state performance under different working modes but also solves the control-schedule discontinuity problem, especially during mode transition. The optimal control schedules are continuous and almost monotonic, and hence are strongly suitable for a control system, and are designed for two different working conditions, i.e., supersonic and subsonic throttling,which proves that the proposed hybrid method applies to various working conditions. The evaluation demonstrates that the proposed control method optimizes the engine performance, the surge margin of the compression components, and the range of the thrust during throttling.

关 键 词：Adaptive cycle engine Control schedule design Hybrid optimization method Mode transition Performance optimization 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]