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This paper investigates the fault tolerance control of hypersonic aircrafts with
Zhaoying Li; Shuai Shi. \({\mathcal{L}_1}\) Adaptive Loss Fault Tolerance Control of Unmanned Hypersonic Aircraft with Elasticity. Aerospace 2021, 8, 176 .
AMA StyleZhaoying Li, Shuai Shi. \({\mathcal{L}_1}\) Adaptive Loss Fault Tolerance Control of Unmanned Hypersonic Aircraft with Elasticity. Aerospace. 2021; 8 (7):176.
Chicago/Turabian StyleZhaoying Li; Shuai Shi. 2021. "\({\mathcal{L}_1}\) Adaptive Loss Fault Tolerance Control of Unmanned Hypersonic Aircraft with Elasticity." Aerospace 8, no. 7: 176.
In this paper, a nonlinear robust controller is proposed to deal with the flight mode transition control problem of tail-sitter aircrafts. During the mode transitions, the control problem is challenging due to the high nonlinearities and strong couplings. The tail-sitter aircraft model can be considered as a nominal part with uncertainties including nonlinear terms, parametric uncertainties, and external disturbances. The proposed controller consists of a nominal H∞ controller and a nonlinear disturbance observer. The nominal H∞ controller based on the nominal model is designed to achieve the desired trajectory tracking performance. The uncertainties are regarded as equivalent disturbances to restrain their influences by the nonlinear disturbance observer. Theoretical analysis and simulation results are given to show advantages of the proposed control method, compared with the standard H∞ control approach.
Zhaoying Li; Lixin Zhang; Hao Liu; Zongyu Zuo; Cunjia Liu. Nonlinear robust control of tail-sitter aircrafts in flight mode transitions. Aerospace Science and Technology 2018, 81, 348 -361.
AMA StyleZhaoying Li, Lixin Zhang, Hao Liu, Zongyu Zuo, Cunjia Liu. Nonlinear robust control of tail-sitter aircrafts in flight mode transitions. Aerospace Science and Technology. 2018; 81 ():348-361.
Chicago/Turabian StyleZhaoying Li; Lixin Zhang; Hao Liu; Zongyu Zuo; Cunjia Liu. 2018. "Nonlinear robust control of tail-sitter aircrafts in flight mode transitions." Aerospace Science and Technology 81, no. : 348-361.
This paper addresses the nonlinear robust tracking controller design problem for hypersonic vehicles. This problem is challenging due to strong coupling between the aerodynamics and the propulsion system, and the uncertainties involved in the vehicle dynamics including parametric uncertainties, unmodeled model uncertainties, and external disturbances. By utilizing the feedback linearization technique, a linear tracking error system is established with prescribed references. For the linear model, a robust controller is proposed based on the signal compensation theory to guarantee that the tracking error dynamics is robustly stable. Numerical simulation results are given to show the advantages of the proposed nonlinear robust control method, compared to the robust loop-shaping control approach.
Zhaoying Li; Wenjie Zhou; Hao Liu. Nonlinear robust control of hypersonic aircrafts with interactions between flight dynamics and propulsion systems. ISA Transactions 2016, 64, 1 -11.
AMA StyleZhaoying Li, Wenjie Zhou, Hao Liu. Nonlinear robust control of hypersonic aircrafts with interactions between flight dynamics and propulsion systems. ISA Transactions. 2016; 64 ():1-11.
Chicago/Turabian StyleZhaoying Li; Wenjie Zhou; Hao Liu. 2016. "Nonlinear robust control of hypersonic aircrafts with interactions between flight dynamics and propulsion systems." ISA Transactions 64, no. : 1-11.