Results 21 to 30 of about 1,034,399 (260)
Diffusion Monte Carlo method: numerical analysis in a simple case [PDF]
, 2007 The Diffusion Monte Carlo method is devoted to the computation of electronic ground-state energies of molecules. In this paper, we focus on implementations of this method which consist in exploring the configuration space with a {\bf fixed} number of ...
Jourdain, Benjamin +2 more
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Long Time Results for a Weakly Interacting Particle System in Discrete Time [PDF]
, 2014 We study long time behavior of a discrete time weakly interacting particle system, and the corresponding nonlinear Markov process in $\mathbb{R}^d$, described in terms of a general stochastic evolution equation.
Budhiraja, Amarjit +1 more
core +3 more sources
Attitude Tracking Control for Spacecraft With Fixed-Time Convergence
IFAC-PapersOnLine, 2020 Abstract This work mainly discusses the attitude tracking issue of spacecraft which ensures fixed-time convergence property. To achieve this, the attitude tracking dynamics model is first established. Then a novel sliding manifold is constructed based on the presented sufficient condition of fixed-time stability.
Wei Chen, Mingmin Liu, Qinglei Hu
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IEEE Access, 2020 This paper proposes a nonsingular terminal sliding mode control scheme with fast fixed-time convergence for a class of second-order nonlinear systems in the presence of matched uncertainties and perturbations. First, based on fixed-time stability theory,
Ye Tian, Yuanli Cai, Yifan Deng
doaj +1 more source
Switched gain differentiator with fixed-time convergence
IFAC-PapersOnLine, 2017 Acceleration of estimation for a class of nonlinear systems in the output canonical form is considered in this work. The acceleration is achieved by a supervisory algorithm design that switches among different values of observer gain. The presence of bounded matched disturbances, Lipschitz uncertainties and measurement noises is taken into account. The
Efimov, Denis +3 more
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Complexity, 2020 This brief addresses the position and attitude tracking fixed-time practical control for quadrotor unmanned aerial vehicles (UAVs) subject to nonlinear dynamics.
Jianhua Zhang, Yang Li, Wenbo Fei
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On the inviscid limit of the Navier-Stokes equations [PDF]
, 2014 We consider the convergence in the $L^2$ norm, uniformly in time, of the Navier-Stokes equations with Dirichlet boundary conditions to the Euler equations with slip boundary conditions. We prove that if the Oleinik conditions of no back-flow in the trace
Constantin, Peter +2 more
core +1 more source
Fixed-Time convergent Adaptive Observer for LTI Systems
IFAC-PapersOnLine, 2017 Abstract In this note a new adaptive observer for linear time invariant systems is proposed. Without persistency of excitation, asymptotic convergence to the state is provided. If persistency of excitation is present in the system, uniform finite-time convergence to the internal state and parameters is guaranteed.
Juan G. Rueda-Escobedo, Jaime A. Moreno
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On the pointwise convergence of the integral kernels in the Feynman-Trotter formula [PDF]
, 2019 We study path integrals in the Trotter-type form for the Schr\"odinger equation, where the Hamiltonian is the Weyl quantization of a real-valued quadratic form perturbed by a potential $V$ in a class encompassing that - considered by Albeverio and It\^o ...
Nicola, Fabio, Trapasso, S. Ivan
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On the pathwise approximation of stochastic differential equations [PDF]
, 2015 We consider one-step methods for integrating stochastic differential equations and prove pathwise convergence using ideas from rough path theory. In contrast to alternative theories of pathwise convergence, no knowledge is required of convergence in pth ...
Shardlow, Tony, Taylor, Phillip
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