基于奇异摄动分解的弹性飞机乘坐品质控制

Translated title of the contribution: Singular perturbation decomposition-based ride quality control of elastic aircraft

Zhaoxing Li, Xia Wang, Minwen Wang, Jian Shen, Bin Xu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Considering the reduction of ride comfort under wind disturbance, the ride quality control method based on singular perturbation decomposition is proposed. For the dynamic model of elastic aircraft, the singular perturba- tion theory is used to decouple the model into the rigid-slow subsystem and the flexible-fast subsystem. Considering the additional time-varying disturbance and aerodynamic uncertainty of the rigid subsystem, the disturbance observer is designed to estimate disturbance effect and the neural network is used to deal with model uncertainty. The adaptive robust control is constructed using the composite estimation information as feedforward compensation and the tracking error of pitch rate and normal overload as feedback design. For the flexible subsystem, a nonsingu- lar terminal sliding mode controller is designed to achieve active vibration suppression. The ride quality control law of elastic aircraft is obtained by combining the control inputs of the rigid and flexible subsystems, and the additional normal overload and elastic mode can be quickly restrained and converged. Based on Lyapunov stability analysis, the uniformly ultimate boundedness of the system is proved. The simulation results show that the proposed method can reduce the additional normal overload at the key positions of the aircraft under discrete gust and atmospheric turbulence, and the riding quality of elastic aircraft is effectively improved.

Translated title of the contributionSingular perturbation decomposition-based ride quality control of elastic aircraft
Original languageChinese (Traditional)
Pages (from-to)831-841
Number of pages11
JournalXibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
Volume41
Issue number5
DOIs
StatePublished - Oct 2023

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