Finite-time nonsingular terminal sliding mode control-based fuzzy smooth-switching coordinate strategy for AHV-VGI

Dou, Lihua; Du, Miaomiao; Mao, Qi; Zong, Qun

doi:10.1016/j.ast.2020.106080

Cited by 13 publications

(7 citation statements)

References 32 publications

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“…In this section, a simple case study is first given to show that singularity issue occurs in conventional finite-time schemes, whereas our proposed switching mechanism avoids such issue. Then, we compare our method with the HFV designs [17] and [29] to illustrate the effectiveness of the proposed strategy over existing methods in terms of convergence, smoothness and constraints satisfaction.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Consider any initial conditions satisfying L(0 28), ( 46), ( 51) and ( 56) and two scalar first-order filters (37) are involved in our design, which makes it simpler than vector-based adaptation laws in backstepping approach proposed for HFVs [14]. In addition, the proposed switching mechanism can be simply implemented as a static nonlinearity as in ( 39) and (40), which is comparable to the complexity of state-of-the-art approaches proposed for HFVs, such as sliding mode control design [17].…”

Section: B Altitude Control Designmentioning

confidence: 99%

“…Comparative simulations are carried out among the proposed PFC, the conventional finite-time nonsingular terminal sliding mode unconstrained control (CFC [17]), and the conventional infinite-time constrained control (CIC [29]), whose controllers are listed in Table I. In this simulation, the vehicle climbs a maneuver from initial values h = 88, 000 ft and V = 7700 ft/s to final values h = 91, 000 ft and V = 8700 ft/s, respectively.…”

Section: B Application To the Hfvs Dynamicsmentioning

confidence: 99%

“…Recently, some HFVs literature [17]- [19] has highlighted the importance of finite-time tracking as compared to conventional non-finite-time tracking methods as in [1]- [16], due to its faster convergence rate. Finite-time tracking can be obtained via appropriate modifications to standard design methodologies.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Finite-Time Fuzzy Adaptive Constrained Tracking Control for Hypersonic Flight Vehicles With Singularity-Free Switching

Pan

et al. 2022

IEEE/ASME Trans. Mechatron.

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This work proposes a fuzzy adaptive design solving the finite-time constrained tracking for hypersonic flight vehicles (HFVs). Actuator dynamics and asymmetric time-varying constraints are considered when solving this problem. The main features of the proposed design lie in: (a) introducing a novel piecewise but differentiable switching control law, with an appropriate design thought to avoid singularity issues typical of finite-time control; (b) handling actuator magnitude, bandwidth, and rate constraints, thanks to the introduction of an auxiliary compensating system counteracting the adverse effects caused by actuator physical constraints, while guaranteeing the closed-loop stability; (c) handling asymmetric time-varying state constraints, thanks to the introduction of tan-type barrier Lyapunov functions (BLFs) working for both constrained and unconstrained scenarios. Comparative simulation results illustrate the effectiveness of the proposed strategy over existing methods for HFVs in terms of convergence, smoothness, actuator performance, and constraints satisfaction.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: B Altitude Control Designmentioning

confidence: 99%

Section: B Application To the Hfvs Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite-Time Fuzzy Adaptive Constrained Tracking Control for Hypersonic Flight Vehicles With Singularity-Free Switching

Pan

et al. 2022

IEEE/ASME Trans. Mechatron.

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“…Additionally, the finite-time sliding mode control method has faster convergence and better robustness to model uncertainties and external disturbances. Inspired by this attractive characteristic, the finite-time stability sliding mode control has been applied in the speed and altitude control of air-breathing hypersonic vehicles [17], the attitude control of unmanned aerial vehicles [18], and spacecraft steering rendezvous [19]. Therefore, the sliding mode guidance law with finite-time convergence is worth further studying.…”

Section: Introductionmentioning

confidence: 99%

A Novel Guidance Law for Intercepting a Highly Maneuvering Target

Zhang

2021

International Journal of Aerospace Engineering

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Given the resolution of the guidance for intercepting highly maneuvering targets, a novel finite-time convergent guidance law is proposed, which takes the following conditions into consideration, including the impact angle constraint, the guidance command input saturation constraint, and the autopilot second-order dynamic characteristics. Firstly, based on the nonsingular terminal sliding mode control theory, a finite-time convergent nonsingular terminal sliding mode surface is designed. On the back of the backstepping control method, the virtual control law appears. A nonlinear first-order filter is constructed so as to address the “differential expansion” problem in traditional backstepping control. By designing an adaptive auxiliary system, the guidance command input saturation problem is dealt with. The RBF neural network disturbance observer is used for estimating the unknown boundary external disturbances of the guidance system caused by the target acceleration. The parameters of the RBF neural network are adjusted online in real time, for the purpose of improving the estimation accuracy of the RBF neural network disturbance observer and accelerating its convergence characteristics. At the same time, an adaptive law is designed to compensate the estimation error of the RBF neural network disturbance observer. Then, the Lyapunov stability theory is used to prove the finite-time stability of the guidance law. Finally, numerical simulations verify the effectiveness and superiority of the proposed guidance law.

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Composite Design of Disturbance Observer and Reentry Attitude Controller: An Enhanced Finite-time Technique for Aeroservoelastic Reusable Launch Vehicles

Yang

Mao

Dou

et al. 2022

Int. J. Control Autom. Syst.

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Finite-time nonsingular terminal sliding mode control-based fuzzy smooth-switching coordinate strategy for AHV-VGI

Cited by 13 publications

References 32 publications

Finite-Time Fuzzy Adaptive Constrained Tracking Control for Hypersonic Flight Vehicles With Singularity-Free Switching

Finite-Time Fuzzy Adaptive Constrained Tracking Control for Hypersonic Flight Vehicles With Singularity-Free Switching

A Novel Guidance Law for Intercepting a Highly Maneuvering Target

Composite Design of Disturbance Observer and Reentry Attitude Controller: An Enhanced Finite-time Technique for Aeroservoelastic Reusable Launch Vehicles

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