Adaptive finite‐time actuator fault‐tolerant coordinated attitude control of multispacecraft with input saturation

Zhu, Zhihao; Guo, Yu; Gao, Zhi

doi:10.1002/acs.2976

Cited by 10 publications

(10 citation statements)

References 37 publications

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“…Then, we can get that v 1 and 𝜔 1 are bounded, due to z 1 = v 1 + 𝜔 1 , z 1 is bounded. Because of 𝛼 i being bounded, from ( 9), (22), and ( 35), x i,c is bounded. From (5), y d is bounded, so x i is bounded.…”

Section: Resultsmentioning

confidence: 99%

Finite‐time adaptive fuzzy control for a class of output constrained nonlinear systems with dead‐zone

Liu

Zhang

2021

Adaptive Control & Signal

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The article investigates the finite-time adaptive fuzzy control for a class of nonlinear systems with output constraint and input dead-zone. First, by skillfully combining the barrier Lyapunov function, backstepping design method, and finite-time control theory, a novel adaptive state-feedback tracking controller is constructed, and the output constraint of the nonlinear system is not violated. Second, the fuzzy logic system is used to approximate unknown function in the nonlinear system. Third, the finite-time command filter is introduced to avoid the problem of "complexity explosion" caused by repeated differentiations of the virtual control signal in conventional backstepping control schemes. Meanwhile, a new saturation function is added in the compensating signal for filter error to improve control accuracy. Finally, based on Lyapunov stability analysis, all the signals of the closed-loop are proved to be semi-globally uniformly ultimately bounded, and the tracking error converges to a small neighborhood region of the origin in a finite time. A simulation example is presented to demonstrate the effectiveness for the proposed control scheme.

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Section: Resultsmentioning

confidence: 99%

Finite‐time adaptive fuzzy control for a class of output constrained nonlinear systems with dead‐zone

Liu

Zhang

2021

Adaptive Control & Signal

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“…By using 0 < 𝜏 k,n (t) ≤ 𝜏 2 , and 0 < d(t) ≤ d 2 , applying the Wirtinger-based inequality from Reference 3 and Jenson's inequality to the integral term in (21), we get that…”

Section: Memory Event-triggered Schemementioning

confidence: 99%

“…On another frontier, the definition of finite-time stability (FTS) characterizes the trajectories of the system within a fixed-time interval and has grabbed enormous attention from researchers. [20][21][22] In contrast to asymptotic Lyapunov stability, FTS implies that system states must be kept within certain limits in the finite-time interval. From a practical point of view, the dynamic behavior of the systems must not exceed specified limits during a fixed time interval.…”

Section: Introductionmentioning

confidence: 99%

Finite‐time resilient control for networked control systems with multiple cyber‐attacks: Memory/adaptive event‐triggered scheme

Sathishkumar

Liu

2022

Adaptive Control & Signal

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This article addresses the finite-time memory and finite-time adaptive event-triggered control issues for networked control systems (NCSs) with randomly occurring cyber-attacks. A comprehensive stochastic attack model is developed that includes false-data injection attacks and denial-of-service attacks. In our first problem, the purpose of the memory event-triggered scheme is used to release certain packets to establish new events contrasting with the existing event-triggered method. In this fashion, the event generator can make a more accurate decision and better control performance can be expected. On the other hand, our second problem introduces an adaptive event-triggered scheme to reduce unnecessary communication transmissions in a network with an adaptive varying-threshold while maintaining acceptable system performance. In both problems where malicious signals are injected by adversaries, a random variable is presented to relate cyber-attacks. Using Lyapunov stability theory, integral inequality and linear matrix inequality, a sufficient condition is constructed for both problems to achieve the exponentially mean-square finite-time boundedness for NCSs under stochastic attacks. Finally, three numerical examples are simulated to demonstrate the effectiveness of the proposed methods.

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“…Considering the aforementioned issues, this paper aims to develop a finite time attitude controller for solar sail due to its good performance in fast convergence and the wide applications in attitude control of spacecraft (Zhong et al, 2016;Hu and Tan, 2017;Zhu and Guo, 2017;Zhu et al, 2019), to obtain a fast tracking control of sail's attitude required by orbit mission. A solar sail equipped with sliding masses and RSB is investigated, taking into account the changing inertia, the unknown SRP disturbance, as well as the torque constraints caused by actuator saturation and attitude maneuver.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Finite-time Attitude Tracking Control for Solar Sail with State-dependent Torque Saturation

Wu,

Wang,

Zhu

2024

CEAI

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This paper aims to investigate a fast attitude tracking control strategy for a solar sail equipped with sliding masses (SM) and roll stabilized bar (RSB) in presence of uncertain inertia, unknown disturbance, actuator saturation, and coupling between control torque and attitude angles. The state-dependent saturation of the attitude control torque is proposed to deal with the coupling between control torque and attitude angles. A novel adaptive finitetime control law is proposed to obtain fast attitude tracking, where two novel adaptive control parameters are designed to compensate the uncertain inertia, the unknown disturbance, and the state-dependent torque saturation. Compared to traditional attitude controller for solar sail, the proposed control strategy has the advantages of guaranteeing the success of actuator allocations by considering the torque constraints and of making full use of the saturated torque for fast attitude tracking. The effectiveness of the proposed control strategy is shown in a Sunline tracking mission via simulation.

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Adaptive finite‐time actuator fault‐tolerant coordinated attitude control of multispacecraft with input saturation

Cited by 10 publications

References 37 publications

Finite‐time adaptive fuzzy control for a class of output constrained nonlinear systems with dead‐zone

Finite‐time adaptive fuzzy control for a class of output constrained nonlinear systems with dead‐zone

Finite‐time resilient control for networked control systems with multiple cyber‐attacks: Memory/adaptive event‐triggered scheme

Adaptive Finite-time Attitude Tracking Control for Solar Sail with State-dependent Torque Saturation

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