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DOB-Based Neural Control of Flexible Hypersonic Flight Vehicle Considering Wind Effects

DOB-Based Neural Control of Flexible Hypersonic Flight Vehicle Considering Wind Effects

Authors :
Bin Xu
Zhongke Shi
Youmin Zhang
Danwei Wang
Source :
IEEE Transactions on Industrial Electronics. 64:8676-8685
Publication Year :
2017
Publisher :
Institute of Electrical and Electronics Engineers (IEEE), 2017.

Abstract

This paper investigates the disturbance observer (DOB)-based neural adaptive control on the longitudinal dynamics of a flexible hypersonic flight vehicle (HFV) in the presence of wind effects. The coupling effect between flexible states and rigid body, and the accessional angle of attack (AOA) due to wind, is modeled as unknown disturbance, where the nonlinear DOB is constructed using the neural approximation. For the weight update in neural networks (NNs), a novel algorithm is proposed with the additional prediction error derived from the serial–parallel estimation model (SPEM) using both neural approximation and disturbance estimation. Different from previous work, the wind effect is taken into the hypersonic flight dynamics for realistic analysis, and the novel controller is designed using compound estimation, where the NN and the DOB are constructed to deal with aerodynamic uncertainty and unknown disturbance. Simulation studies of a flexible HFV with wind effects show that the proposed controller can achieve high tracking accuracy, while the compound estimation can closely follow the system uncertainty with fast convergence.

Details

ISSN :
15579948 and 02780046
Volume :
64
Database :
OpenAIRE
Journal :
IEEE Transactions on Industrial Electronics
Accession number :
edsair.doi...........c8fc40e24c1b005381841f875e8fdd3c
Full Text :
https://doi.org/10.1109/tie.2017.2703678