Augmented fixed‐time observer‐based continuous robust control for hypersonic vehicles with measurement noises

Sun, Jinlin; Yi, Jianqiang; Pu, Zhiqiang

doi:10.1049/iet-cta.2018.5823

Cited by 20 publications

(16 citation statements)

References 59 publications

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“…This completes the proof. Remark 5 The existing fixed-time control strategies for HFVs [17]- [19] fail to take system transient and steadystate performances into account and it is fairly complicated to make tracking error convergence into a preassigned compact set within the fixed-time by selecting design parameters. It is worth noting that the fixedtime tracking control is achieved as long as the bounded condition is satisfied in the proposed design.…”

Section: Altitude Controller Designmentioning

confidence: 99%

Fixed-Time Fuzzy Adaptive Fault-Tolerant Control for Hypersonic Flight Vehicles Using a New Prescribed Performance Function

Dong¹,

Li²,

Lv³

et al. 2021

Preprint

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This article proposes a new fixed-time fuzzy adaptive fault-tolerant control methodology for the longitudinal dynamics of hypersonic flight vehicles (HFVs) in the presence of actuator faults, uncertain dynamics and external disturbances. In contrast with the conventional fixed-time control schemes that typically contain the fractional powers of errors in their designs, this work develops a low-complexity control structure in the sense of removing the dependence on the need of above-mentioned fractional power terms by means of prescribed performance control (PPC) method. Different from the most existing PPC approaches where the initial conditions of tracking errors are required to be known, the newly proposed prescribed performance function (PPF) can relax such restrictions through choosing properly small initial values of PPF. Fuzzy logic systems (FLSs) are employed to handle unknown dynamics and minimal learning parameter (MLP) technique is incorporated into the design for the purpose of alleviating computation burden. Closed-loop stability is rigorously proved via Lyapunov stability theory and simulation results are eventually given to validate the effectiveness of the proposed control strategy.

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Section: Altitude Controller Designmentioning

confidence: 99%

Fixed-Time Fuzzy Adaptive Fault-Tolerant Control for Hypersonic Flight Vehicles Using a New Prescribed Performance Function

Dong¹,

Li²,

Lv³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Therefore, finite-time control methods were proposed and widely researched. As for AHV control, the finite-time convergence is usually guaranteed by utilizing non-smooth control schemes, namely, terminal sliding mode control (Ma et al, 2019; Sun et al, 2017), twisting control (Guo et al, 2018), super-twisting control (Sun et al 2019), high-order sliding-mode control (Sagliano et al, 2017) and some other schemes.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al (2019a) utilized super-twisting sliding mode to design a fixed-time disturbance observer, based on which a fixed-time backstepping controller was obtained for AHV. Sun et al (2019) presented an augmented fixed-time disturbance observer to deal with the measurement noises in feedback signals. Basin et al (2018) carefully compared the performance of finite- and fixed-time differentiators for a hypersonic missile in detailed simulations.…”

Section: Introductionmentioning

confidence: 99%

Fixed-time adaptive general type-2 fuzzy logic control for air-breathing hypersonic vehicle

Jiang

Wang

et al. 2021

Transactions of the Institute of Measurement and Control

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This paper proposes a novel fixed-time adaptive general type-2 fuzzy logical control (FAGT2FLC) scheme for an air-breathing hypersonic vehicle (AHV) with uncertainties. Firstly, the AHV dynamic model is transformed into a strict feedback form. Then, the FAGT2FLC is designed based on the transformed model to improve robustness and guarantee fixed-time convergence of the closed-loop system. The general type-2 fuzzy logic system (GT2FLS) is utilized to approximate the model uncertainties; for the purpose of designing adaptive laws, the [Formula: see text]-plane method is employed to represent the GT2FLS. A parameter projection operator is used to solve the possible singularity problem of parameter adaption. Besides, a fixed-time differentiator is used to deal with the “explosion of terms” inherent in backstepping method. Theoretical analysis based on relevant lemmas shows that the closed-loop system will converge into a small error band in fixed time. Lastly, detailed simulations are carried out to demonstrate the effectiveness and superiority of the proposed control scheme.

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“…Disturbances observer (DO) is usually employed in engineering practice, to suppress external disturbances and system uncertainty (see, for example, Chen and Ge (2013), Han et al (2019), Li et al (2018), Sun et al (2019), Yang et al (2018), Yang et al (2013), Yang et al (2008) and Zheng and Chen (2018)). For instance, an enhanced nonlinear DO was derived by Chen et al (2000) to estimate the constant disturbance of robotic manipulators.…”

Section: Introductionmentioning

confidence: 99%

Fixed-time tracking control for two-link rigid manipulator based on disturbance observer

Gao

2021

Transactions of the Institute of Measurement and Control

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This paper studies the fixed-time disturbance estimate and tracking control for two-link manipulators subjected to external disturbance. A fixed-time extended-state disturbance observer (FxTESDO) is proposed by improving the extended state observer. Also, a fixed-time inverse dynamics tracking control (FxTIDTC) scheme based on the FxTESDO is given for two-link manipulators. The fixed-time convergence of the FxTESDO and FxTIDTC is proved by the Lyapunov stability theory and with the aid of the bi-limit homogeneous technique. Numerical simulations are employed to illustrate the effectiveness of the proposed FxTIDTC.

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Augmented fixed‐time observer‐based continuous robust control for hypersonic vehicles with measurement noises

Cited by 20 publications

References 59 publications

Fixed-Time Fuzzy Adaptive Fault-Tolerant Control for Hypersonic Flight Vehicles Using a New Prescribed Performance Function

Fixed-Time Fuzzy Adaptive Fault-Tolerant Control for Hypersonic Flight Vehicles Using a New Prescribed Performance Function

Fixed-time adaptive general type-2 fuzzy logic control for air-breathing hypersonic vehicle

Fixed-time tracking control for two-link rigid manipulator based on disturbance observer

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