Adaptive actuator fault-tolerant control for a three-dimensional Euler–Bernoulli beam with output constraints and uncertain end load

Ji, Ning; Liu, Jinkun

doi:10.1016/j.jfranklin.2018.11.045

Cited by 26 publications

(23 citation statements)

References 25 publications

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“…Assumption 2 is a condition of actuator redundancy of the system, and is a basic assumption to ensure the existence of a nominal solution for the actuator failure compensation problem [23,24]. In Assumption 3, σ i,j is the lower bound of the actuator with PLOE type failures, which is utilized to guarantee the controllability of the system and is commonly used in a majority of existing studies [32,42,43].…”

Section: Problem Formulationmentioning

confidence: 99%

“…Remark 6. It is worth mentioning that, different from [32,43] where the specific values of σ i,j are estimated via parameter update laws, the above design estimates the bounds of the uncertainties of failures, which makes the Lyapunov function has no jump when failures occur. Therefore, the total number of actuator faults is not restricted to be finite, and the mounted actuators are allowed to switch among the healthy case and different type failures infinite times.…”

Section: Adaptive Controller Design For Failure Compensationmentioning

confidence: 99%

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Modeling and adaptive control for a spatial flexible spacecraft with unknown actuator failures

Liu

Han

Zhao

et al. 2021

Sci. China Inf. Sci.

184

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In this paper, we address simultaneous control of a flexible spacecraft's attitude and vibrations in a three-dimensional space under input disturbances and unknown actuator failures. Using Hamilton's principle, the system dynamics is modeled as an infinite dimensional system captured using partial differential equations. Moreover, a novel adaptive fault tolerant control strategy is developed to suppress the vibrations of the flexible panel in the course of the attitude stabilization. To determine whether the system energies, angular velocities and transverse deflections, remain bounded and asymptotically decay to zero in the case wherein the number of actuator failures is infinite, a Lyapunov-based stability analysis is conducted. Finally, extensive numerical simulations are performed to demonstrate the performance of the proposed adaptive control strategy.

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Section: Problem Formulationmentioning

confidence: 99%

Section: Adaptive Controller Design For Failure Compensationmentioning

confidence: 99%

Modeling and adaptive control for a spatial flexible spacecraft with unknown actuator failures

Liu

Han

Zhao

et al. 2021

Sci. China Inf. Sci.

184

View full text Add to dashboard Cite

show abstract

“…In practical systems, an actuator may appear fault due to actuator component failures during implementation. Some researchers have done some research on PDEs model 24,25 . However, in this article, we consider both sensor fault and actuator fault simultaneously for PDEs model.…”

Section: Introductionmentioning

confidence: 99%

Boundary vibration suppression for a flexible three‐dimensional marine riser against unknown sensor and actuator faults

Liu

Yang

2021

Intl J Robust & Nonlinear

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In this article, boundary control strategy is adopted to suppress the vibration of a flexible three‐dimensional (3D) marine riser simultaneously against both sensor and actuator faults. The flexible 3D marine riser is a distributed parameter system modeled as partial differential equations. During normal operation of the system, all the system components will behave optimally. However, if the sensor and actuator appear fault, the system will work abnormally. While the sensor is faulty, the output signal of the sensor will have errors, and this error signal will be the input signal of the actuator. In terms of actuator fault, once the actuator appears fault problem, the actuator should make up for the fault and continue working for the sake of safety. In this work, the fault degree of sensors and actuators are unknown and the boundary control schemes using Nassbaum function are developed for fault compensation. The system stability is proven by introducing an appropriate Lyapunov function. Finally, the simulation results verify the accuracy of the proposed control laws.

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“…Considering the safety and reliability of the control system, there are many researches on adaptive fault-tolerant control for actuator fault [15]- [17]. In engineering systems, the actuator is an indispensable part of the system operation.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Fault-Tolerant Control of Nonlinear Time-Delay Systems With Prescribed Performance

et al. 2020

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An adaptive fault-tolerant control method considering actuator fault is proposed for a class of strict-feedback nonlinear time-delay systems. The prescribed performance is introduced by error transformation, which guarantees the transient performance of the system. Pade approximation and intermediate variables are used to eliminate the effect of input delay on the system performance. The universal approximation nature of fuzzy logic systems is used to approximate the unknown function in the system. A general fault model is introduced to describe the partial fault and stuck fault that may occur during the operation of the systems. The controller based on backstepping can ensure that the system operates normally with actuator fault. Through the Lyapunov function, all signals in the designed closed-loop system can be proved to be semi-globally uniformly ultimately bounded, and the tracking error can quickly converge to a compact set near the origin. Compared with the non-fault-tolerant control system, the simulation results show the effectiveness of the proposed control strategy.

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Adaptive actuator fault-tolerant control for a three-dimensional Euler–Bernoulli beam with output constraints and uncertain end load

Cited by 26 publications

References 25 publications

Modeling and adaptive control for a spatial flexible spacecraft with unknown actuator failures

Modeling and adaptive control for a spatial flexible spacecraft with unknown actuator failures

Boundary vibration suppression for a flexible three‐dimensional marine riser against unknown sensor and actuator faults

Adaptive Fault-Tolerant Control of Nonlinear Time-Delay Systems With Prescribed Performance

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