Controller Design of Aero-engines under the Distributed Architecture with Time Delays

This paper investigates control design of aero-engine systems by using distributed architecture. In distributed control architecture, delay is inevitable due to the network transmission. To address such problems, a feasible aero-engine controller reconstruction/design method is proposed based on distributed architecture with time delays. First, the causes of network-induced delay are analyzed, and the engine system is remodeled by augmenting the state variables to transform it into a time delay-free augmentation system. In addition, considering the multi-variable control requirements of aero-engines, an augmented linear quadratic regulator is investigated to reduce the effects of time delays on engine performance. Secondly, for a certain type of aero-engines, the aero-engine distributed control simulation platform is built in the Truetime toolbox accordingly, which is universal to verify varied controllers of aero-engines under distributed architecture. Finally, the proposed method is simulated and verified on the platform. The results show that the designed controller can not only guarantee the system is stable, but also ensure the desired performance of the aero-engine in the presence of persistent delay. Moreover, the good anti-interference performance is also guaranteed.