Fixed-Time Convergent Guidance Law with Impact Angle Control
Complexity, 2020 The existing convergence control guidance laws are designed via the Lyapunov asymptotic stability theory or finite-time stability theory. However, guidance law based on the Lyapunov asymptotic stability theory would lead the states to zero only as time ...
Zhongtao Cheng +4 more
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Finite-Time Extended State Observer-Based Fixed-Time Attitude Control for Hypersonic Vehicles
Mathematics, 2022 A finite-time extended, state-observer-based, fixed-time backstepping control algorithm was designed for hypersonic flight vehicles. To enhance the robustness of the controller, two novel finite-time extended state observers were introduced to compensate
Jiaqi Zhao +3 more
doaj +1 more source
Fixed-Time Homogeneous Integral Controller
IFAC-PapersOnLine, 2018 Abstract We propose a homogeneous integral controller with positive homogeneity degree, for systems with relative degree two and three. Its design and the convergence proof is achieved by the construction of an explicit homogenous Lyapunov function. A combination of this controller, with a discontinuous one developed by the authors in a previous work,
Angel Mercado-Uribe, Jaime A. Moreno
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On SFTSM control with fixed‐time convergence
IET Control Theory & Applications, 2017 A singularity‐free terminal sliding mode (TSM) control scheme with fast and fixed‐time convergence for a class of second‐order non‐linear systems with matched uncertainties and external disturbances is proposed. A novel singularity‐free fast TSM (SFTSM) structure is constructed and the upper‐bound of convergence time is independent of initial states ...
Li, Huijie, Cai, Yuanli
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Adaptive Neural Network Fixed-Time Control Design for Bilateral Teleoperation With Time Delay
IEEE Transactions on Cybernetics, 2021 In this article, subject to time-varying delay and uncertainties in dynamics, we propose a novel adaptive fixed-time control strategy for a class of nonlinear bilateral teleoperation systems.
Shuang Zhang +5 more
semanticscholar +1 more source
Minimal time for the continuity equation controlled by a localized perturbation of the velocity vector field [PDF]
, 2019 In this work, we study the minimal time to steer a given crowd to a desired configuration. The control is a vector field, representing a perturbation of the crowd velocity, localized on a fixed control set.
Duprez, Michel +2 more
core +4 more sources
Consistent discretization of finite/fixed-time controllers
, 2022 The paper proposes an algorithm for a discretization (sampled-time implementation) of a homogeneous control preserving the finite-time and nearly fixed-time stability property of the original (sampling-free) system. The sampling period is assumed to be constant. Both single-input and multiple-input cases are considered.
Polyakov, Andrey +2 more
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On the practicality of time-optimal two-qubit Hamiltonian simulation [PDF]
, 2003 What is the time-optimal way of using a set of control Hamiltonians to obtain a desired interaction? Vidal, Hammerer and Cirac [Phys. Rev. Lett. 88 (2002) 237902] have obtained a set of powerful results characterizing the time-optimal simulation of a two-
B. Kraus +16 more
core +2 more sources
Continuous Fixed-Time Sliding Mode Attitude Controller Design for Rigid-Body Spacecraft
IEEE Access, 2020 Fast and high-precision attitude control for the rigid spacecraft is important for its broad applications in astronautics. In this paper, we address this problem via continuous nonsingular fixed-time sliding mode control approach.
Lei Wang, Zhuoyue Song
doaj +1 more source
Adaptively time stepping the stochastic Landau-Lifshitz-Gilbert equation at nonzero temperature: implementation and validation in MuMax3 [PDF]
, 2017 Thermal fluctuations play an increasingly important role in micromagnetic research relevant for various biomedical and other technological applications.
Coene, A. +5 more
core +3 more sources