Bumpless Transfer of Uncertain Switched System and Its Application to Turbofan Engines

Energies

Bin Wang¹  Penghui Sun²  Huairong Chen²  Bei Yang²  Xi Wang²  Shubo Yang² 

[1] Aero Engine Academy of China, Aero Engine Corporation of China, Beijing 101304, China;School of Energy and Power Engineering, Beihang University, Beijing 100083, China;

关键词: bumpless transfer;    uncertain switched system;    integral sliding mode control;    multiple Lyapunov function;    global stability;    turbofan engine;   

DOI  :  10.3390/en14165204

来源: DOAJ

【 摘 要 】

Nonlinear control problems in turbofan engines are challenging. No single nonlinear controller can achieve desired control effects in a full flight envelope, but in the case of multiple controllers, there exist problems in the bumpless transfer between different controllers. To this end, this paper presents a bumpless transfer mechanism for an uncertain switched system based on integral sliding mode control (ISMC), and the mechanism can be used for the speed control of turbofan engines. The uncertain switched system is used to describe the turbofan engine dynamics. Then, the ISMC controller is derived for subsystems of the uncertain switched system. A resetting scheme is introduced for the ISMC controller to ensure the continuity of control inputs during the controller transition, as well as the bumpless transfer. In view of the transient behavior caused by controller switching, the global stability of the switched system is analyzed using the multiple Lyapunov function approach and average dwell time condition. Simulation results validate that the designed resetting scheme can ensure the continuity of control input signals and avoid the instability caused by high-frequency controller switching, and increase the control effectiveness of the proposed ISMC method within the full flight envelope.

【 授权许可】

Unknown