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Active fault tolerant control of turbofan engines with actuator faults under disturbances
International Journal of Turbo & Jet-Engines ( IF 0.9 ) Pub Date : 2020-11-17 , DOI: 10.1515/tjeng-2020-0039
Yan-Hua Ma 1, 2 , Xian Du 3, 4 , Lin-Feng Gou 5 , Si-Xin Wen 2
Affiliation  

In this paper, an active fault-tolerant control (FTC) scheme for turbofan engines subject to simultaneous multiplicative and additive actuator faults under disturbances is proposed. First, a state error feedback controller is designed based on interval observer as the nominal controller in order to achieve the model reference rotary speed tracking control for the fault-free turbofan engine under disturbances. Subsequently, a virtual actuator based reconfiguration block is developed aiming at preserving the consistent performance in spite of the occurrence of the simultaneous multiplicative and additive actuator faults. Moreover, to improve the performance of the FTC system, the interval observer is slightly modified without reconstruction of the state error feedback controller. And a theoretical sufficiency criterion is provided to ensure the stability of the proposed active FTC system. Simulation results on a turbofan engine indicate that the proposed active FCT scheme is effective despite of the existence of actuator faults and disturbances.

中文翻译:

扰动下具有执行器故障的涡轮风扇发动机的主动容错控制

本文提出了一种在扰动下同时发生乘法器和加法执行器故障的涡扇发动机主动容错控制(FTC)方案。首先,基于间隔观测器作为标称控制器设计了状态误差反馈控制器,以实现无故障涡轮风扇发动机在扰动下的模型参考转速跟踪控制。随后,开发了基于虚拟执行器的重新配置模块,尽管存在同时发生的乘法器和附加执行器故障,但其目的是保持一致的性能。此外,为了提高FTC系统的性能,对间隔观察器进行了一些修改,而无需重建状态误差反馈控制器。并提供了理论上的充分性标准,以确保所提出的有源FTC系统的稳定性。涡轮风扇发动机的仿真结果表明,尽管存在执行器故障和干扰,但所提出的主动FCT方案仍然有效。
更新日期:2020-11-21
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