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Proceedings Paper

Reusable launch vehicle model uncertainties impact analysis
Author(s): Jiaye Chen; Rongjun Mu; Xin Zhang; Yanpeng Deng
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Paper Abstract

Reusable launch vehicle(RLV) has the typical characteristics of complex aerodynamic shape and propulsion system coupling, and the flight environment is highly complicated and intensely changeable. So its model has large uncertainty, which makes the nominal system quite different from the real system. Therefore, studying the influences caused by the uncertainties on the stability of the control system is of great significance for the controller design. In order to improve the performance of RLV, this paper proposes the approach of analyzing the influence of the model uncertainties. According to the typical RLV, the coupling dynamic and kinematics models are built. Then different factors that cause uncertainties during building the model are analyzed and summed up. After that, the model uncertainties are expressed according to the additive uncertainty model. Choosing the uncertainties matrix’s maximum singular values as the boundary model, and selecting the uncertainties matrix’s norm to show t how much the uncertainty factors influence is on the stability of the control system . The simulation results illustrate that the inertial factors have the largest influence on the stability of the system, and it is necessary and important to take the model uncertainties into consideration before the designing the controller of this kind of aircraft( like RLV, etc).

Paper Details

Date Published: 5 March 2018
PDF: 8 pages
Proc. SPIE 10710, Young Scientists Forum 2017, 107101M (5 March 2018); doi: 10.1117/12.2317531
Show Author Affiliations
Jiaye Chen, Harbin Institute of Technology (China)
Rongjun Mu, Harbin Institute of Technology (China)
Xin Zhang, Harbin Institute of Technology (China)
Yanpeng Deng, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 10710:
Young Scientists Forum 2017
Songlin Zhuang; Junhao Chu; Jian-Wei Pan, Editor(s)

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