Zhang Louyue, Zhang Hehong, Shi Duoqi, Dan Zhihong, Wang Xi, Zhai Chao, Xiao Gaoxi, Xu Zhouzhe
School of Energy and Power Engineering, Beihang University, Beijing 100191, China.
College of Computer and Data Science, Fuzhou University, Fuzhou 350108, China.
Entropy (Basel). 2025 Aug 20;27(8):880. doi: 10.3390/e27080880.
High-flow aeroengine transient tests involve strong coupling and external disturbances, which pose significant challenges for intake environment simulation systems (IESSs). This study proposes a compound control scheme that combines fixed-time active disturbance rejection with static decoupling methods. The scheme integrates a fixed-time sliding-mode controller (FT-SMC) and a super-twisting fixed-time extended-state observer (ST-FT-ESO). A decoupling transformation separates pressure and temperature dynamics into two independent loops. The observer estimates system states and total disturbances, including residual coupling, while the controller ensures fixed-time convergence. The method is deployed on a real-time programmable logic controller (PLC) and validated through hardware-in-the-loop (HIL) simulations under representative high-flow scenarios. Compared to conventional linear active disturbance rejection decoupling control (LADRDC), the proposed scheme reduces the absolute integral error (AIE) in pressure and temperature tracking by 71.9% and 77.9%, respectively, and reduces the mean-squared error (MSE) by 46.0% and 41.3%. The settling time improves from over 5 s to under 2 s. These results demonstrate improved tracking accuracy, faster convergence, and enhanced robustness against disturbances.
高流量航空发动机瞬态试验涉及强耦合和外部干扰，这给进气环境模拟系统（IESS）带来了重大挑战。本研究提出了一种将固定时间有源干扰抑制与静态解耦方法相结合的复合控制方案。该方案集成了固定时间滑模控制器（FT-SMC）和超扭曲固定时间扩展状态观测器（ST-FT-ESO）。解耦变换将压力和温度动态分为两个独立回路。观测器估计系统状态和包括残余耦合在内的总干扰，而控制器确保固定时间收敛。该方法部署在实时可编程逻辑控制器（PLC）上，并通过在代表性高流量场景下的硬件在环（HIL）仿真进行验证。与传统线性有源干扰抑制解耦控制（LADRDC）相比，所提出的方案在压力和温度跟踪方面分别将绝对积分误差（AIE）降低了71.9%和77.9%，并将均方误差（MSE）降低了46.0%和41.3%。调节时间从超过5秒提高到不到2秒。这些结果表明跟踪精度提高、收敛速度加快且对干扰的鲁棒性增强。
