Preassigned finite-time attitude control for spacecraft based on time-varying barrier Lyapunov functions

Wu, Yuyao; Zhang, Ying; Wu, Ai‐Guo

doi:10.1016/j.ast.2020.106331

Cited by 41 publications

(16 citation statements)

References 34 publications

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“…Finite-time control techniques offer many benefits including faster convergence, precise performance, and robustness to uncertainties and disturbances [22,23]. To achieve finite-time attitude consensus for multiple rigid spacecraft by observerbased distributed control approach, both the distributed observers and attitude tracking controllers are required to achieve finite-time convergence property.…”

Section: Introductionmentioning

confidence: 99%

Finite‐time attitude consensus control for multiple rigid spacecraft based on distributed observers

Huang

et al. 2022

IET Control Theory & Appl

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The problem of attitude consensus control is addressed for multiple rigid spacecraft under a fixed interaction network where only a subset of followers can obtain the leader's state information. To estimate the attitude and angular velocity of the leader, a group of distributed finite-time observers is constructed for each follower. Then fast nonsingular terminal sliding mode attitude controllers are proposed for followers based on the observed information. Rigorous proofs are presented to show the finite-time attitude consensus performance of the closed-loop multiple rigid spacecraft systems under the proposed consensus protocol including distributed observers and attitude controllers. Numerical simulations are provided to illustrate the performance of the proposed attitude consensus protocol.

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Section: Introductionmentioning

confidence: 99%

Finite‐time attitude consensus control for multiple rigid spacecraft based on distributed observers

Huang

et al. 2022

IET Control Theory & Appl

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“…Recently, disturbance observers have been widely used in spacecraft motion control. In Wu et al (2021), an observer is introduced to estimate the lumped disturbance, which ensures the preassigned finite-time stability of the closed-loop system. In Yu et al (2021), a finite-time disturbance observer is used to estimate the states of the leader spacecraft, and the finite-time convergence of the attitude tracking error is realized by combining the finite-time control strategy.…”

Section: Introductionmentioning

confidence: 99%

“…In Lee (2021), a controller based on finite-time disturbance observer and non-singular fast terminal sliding-mode is proposed in the presence of external disturbance, uncertain inertial parameters and actuator failures. In Wu et al (2021), Yu et al (2021), Lee (2021), the settling time depends on the initial conditions of the control system. However, initial conditions of the uncertain system are usually unknown in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Non-singular fixed-time pose tracking control for spacecraft with dead-zone input

Chen

Zhang

et al. 2022

AEAT

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Purpose The purpose of this paper is to investigate the pose control of rigid spacecraft subject to dead-zone input, unknown external disturbance and parametric uncertainty in space maneuvering mission. Design/methodology/approach First, a 6-Degree of Freedom (DOF) dynamic model of rigid spacecraft with dead-zone input, unknown external disturbances and parametric uncertainty is derived. Second, a super-twisting-like fixed-time disturbance observer (FTDO) with strong robustness is developed to estimate the lumped disturbances in fixed time. Based on the proposed observer, a non-singular fixed-time terminal sliding-mode (NFTSM) controller with superior performance is proposed. Findings Different from the existing sliding-mode controllers, the proposed control scheme can directly avoid the singularity in the controller design and speed up the convergence rate with improved control accuracy. Moreover, no prior knowledge of lumped disturbances’ upper bound and its first derivatives is required. The fixed-time stability of the entire closed-loop system is rigorously proved in the Lyapunov framework. Finally, the effectiveness and superiority of the proposed control scheme are proved by comparison with existing approaches. Research limitations/implications The proposed NFTSM controller can merely be applied to a specific type of spacecrafts, as the relevant system states should be measurable. Practical implications A NFTSM controller based on a super-twisting-like FTDO can efficiently deal with dead-zone input, unknown external disturbance and parametric uncertainty for spacecraft pose control. Originality/value This investigation uses NFTSM control and super-twisting-like FTDO to achieve spacecraft pose control subject to dead-zone input, unknown external disturbance and parametric uncertainty.

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“…However, in the proximity process with respect to a tumbling non-cooperative target, the position and attitude tracking is expected to be achieved in a timely manner, which poses high requirements for the response speed of control algorithms. With respect to the fastresponse control methods, terminal sliding mode control with finite-time (or fixed-time) convergence, barrier Lyapunov function (BLF)-based control, and prescribed performance control are well-known control methods that can improve the convergence speed of control systems significantly [18]- [20]. In [21], a terminal sliding mode control law with finite-time convergence is designed for the relative position and attitude control systems of spacecrafts.…”

Section: Introductionmentioning

confidence: 99%

Refined Disturbance Rejection-Based Composite Control of Flexible Spacecrafts for Tracking a Tumbling Non-Cooperative Target

et al. 2022

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When tracking a tumbling non-cooperative target, the position and attitude maneuver control with high-precision as well as fast-response performances is required for flexible spacecrafts. However, the unknown rigid-flexible coupling and model uncertainties will degrade the control performances significantly. Therefore, this paper proposes a refined disturbance rejection-based composite control method for spacecraft position and attitude tracking. First of all, the disturbances including the rigid-flexible coupling and model uncertainties are described by an exogenous model by fully using the partially known disturbance information (e.g., modal frequency and damping). Then, a novel exogenous model-based sliding mode disturbance observer (SMDO) is proposed to achieve the refined disturbance estimation. Next, by combining the SMDO in the feedforward loop and an adaptive terminal sliding mode control (ATSMC) in the feedback loop, a finite-time composite control law is proposed to ensure the fast disturbance rejection and position/attitude tracking simultaneously. In the composite controller, a novel nonsingular terminal sliding mode surface with arctangent function is proposed. Moreover, a time-varying boundary Lyapunov function (BLF) is designed to preassign the transient and steady-state performances of sliding mode surface. Finally, the effectiveness of proposed method is verified via numerical simulation.INDEX TERMS Spacecraft position and attitude tracking, tumbling non-cooperative target, rigid-flexible coupling, sliding mode disturbance observer (SMDO), composite control.

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Preassigned finite-time attitude control for spacecraft based on time-varying barrier Lyapunov functions

Cited by 41 publications

References 34 publications

Finite‐time attitude consensus control for multiple rigid spacecraft based on distributed observers

Finite‐time attitude consensus control for multiple rigid spacecraft based on distributed observers

Non-singular fixed-time pose tracking control for spacecraft with dead-zone input

Refined Disturbance Rejection-Based Composite Control of Flexible Spacecrafts for Tracking a Tumbling Non-Cooperative Target

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