Predefined-time control for a horizontal takeoff and horizontal landing reusable launch vehicle

Zhang, Liang; Liang, Jing; Ye, Liheng; Gao, Xing

doi:10.1108/aeat-11-2020-0253

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…proof Under the action of the control law u, the sliding surface reaches a stable point, that is, S = 0 [24] . We can get…”

Section: Appointed Time Controller Designmentioning

confidence: 97%

Active Vibration Suppression of Flexible Satellite With Appointed Time Convergence

Li¹,

Zhang²,

et al. 2023

Preprint

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In this paper, an appointed time active vibration suppression controller is studied for flexible satellite with piezoelectric actuators. Firstly, a piecewise sliding mode controller with the appointed time is designed to guarantee that the attitude error converges at the appointed time. The convergence time of the model can be set with a prior parameter. Secondly, a modal observer is used to estimate the vibration of the flexible elastic modal, and an active vibration suppression controller is designed to converge at a predefined time. The stability of the two controllers is demonstrated by a Lyapunov theory. The Simulink simulation framework is eventually established, and the numerical simulation results of various data demonstrate the appointed time convergence of the proposed controller. Compared with adaptive sliding mode and nonsingular terminal sliding mode, the controller can achieve higher precision control with less energy consumption.

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“…proof Under the action of the control law u, the sliding surface reaches a stable point, that is, S = 0 [24] . We can get…”

Section: Appointed Time Controller Designmentioning

confidence: 97%

Active Vibration Suppression of Flexible Satellite With Appointed Time Convergence

Li¹,

Zhang²,

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The control action will switch to the secondary Controller II when the libration disturbance appears. The Controller II suppresses the libration to zero within one time step of the Controller I by a novel prescribed-time control (PTC) law based on the fixed-time control scheme [28][29][30]. The stability of the proposed control strategy is proved under the Lyapunov framework.…”

Section: Introductionmentioning

confidence: 99%

Libration-free cargo transfer of floating space elevator

Shi

Zhu

2022

Nonlinear Dyn

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This paper studies the libration-free cargo transfer control of a partial space elevator where the main satellite may change its orbital state in the transfer period. The orbital motion of the main satellite in the climber transfer period is first studied. Then, a reduced-order libration-free dynamics of the partial space elevator is derived.Accordingly, a novel libration-free switching control strategy is proposed to stabilize the cargo transportation with two alternating controllers. The Controller I controls the cargo speed in the libration-free mode by a shrinking horizon model predictive control based on the reduced-order libration-free dynamic mode of the partial space elevator. This leads to high computational efficiency in control. Once the libration is induced by the cargo transfer, the control turns off the Controller I and activates the Controller II to suppress the libration to zero within one time step of the Controller I by a novel prescribed-time control law based on the fixed-time control scheme. The stability of the control is proved in the Lyapunov framework. The validity and effectiveness of the proposed control strategy are demonstrated by computation simulation. Simulation results reveal that the proposed control strategy is effective in keeping stable cargo transportation while ensuring the equilibrium state at the end of transportation.

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Research on trajectory tracking control of delta high-speed parallel robot based on PTNTSMC

Wu,

Zhao,

Cheng

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Predefined-time control for a horizontal takeoff and horizontal landing reusable launch vehicle

Cited by 8 publications

References 32 publications

Active Vibration Suppression of Flexible Satellite With Appointed Time Convergence

Active Vibration Suppression of Flexible Satellite With Appointed Time Convergence

Libration-free cargo transfer of floating space elevator

Research on trajectory tracking control of delta high-speed parallel robot based on PTNTSMC

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