Results 211 to 220 of about 429,197 (329)

Stabilized Radial Basis Function Finite Difference Schemes with Mass Conservation for the Cahn-Hilliard Equation on Surfaces. [PDF]

Entropy (Basel)
Qiao J, Qiao Y, He Y.
europepmc   +1 more source

The Requirement of a Positive Definite Covariance Matrix of Security Returns for Mean-Variance Portfolio Analysis: A Pedagogic Illustration

, 2010
Clarence C. Y. Kwan
openalex   +1 more source

Dynamic Event‐Triggered Robust Model Predictive Control for Quadrotor Trajectory Tracking

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper addresses the trajectory tracking problem for a full‐state quadrotor subject to physical model constraints and unknown external disturbances. A robust tube‐based model predictive control (MPC) approach is successfully applied to the system, which is subject to bounded disturbances and hard constraints.
Ali Can Erüst, Fatma Yıldız Taşcıkaraoğlu, İbrahim Beklan Küçükdemiral   +2 more
wiley   +1 more source

Online Estimation of Manipulator Dynamics for Computed Torque Control of Robotic Systems. [PDF]

Sensors (Basel)
Kallel H, Iqbal K.
europepmc   +1 more source

The rank of a normally distributed matrix and positive definiteness of a noncentral Wishart distributed matrix

, 2007
A. G. M. Steerneman, Frederieke van Perlo-ten Kleij   +1 more
openalex   +2 more sources

Comparative Analysis of the Performances of a Nonlinear Observer and Nonlinear Kalman Filters in the Presence of Non‐Gaussian Disturbances

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper focuses on state estimation for a fairly general class of systems, involving nonlinear functions and disturbances in both the process dynamics and output equations. A nonlinear observer that satisfies a H∞$$ {\boldsymbol{H}}_{\boldsymbol{\infty}} $$ disturbance attenuation constraint in addition to providing asymptotic stability in ...
Hamidreza Movahedi, Ali Zemouche, Rajesh Rajamani   +2 more
wiley   +1 more source

Monte Carlo approximation of the logarithm of the determinant of large matrices with applications for linear mixed models in quantitative genetics. [PDF]

Genet Sel Evol
Bermann M, Alvarez-Munera A, Legarra A, Aguilar I, Misztal I, Lourenco D.   +5 more
europepmc   +1 more source

Locally Preserving Projection on Symmetric Positive Definite Matrix Lie Group

, 2017
Yangyang Li, Ruqian Lu
openalex   +1 more source

The role of identification in data‐driven policy iteration: A system theoretic study

International Journal of Robust and Nonlinear Control, EarlyView.
Abstract The goal of this article is to study fundamental mechanisms behind so‐called indirect and direct data‐driven control for unknown systems. Specifically, we consider policy iteration applied to the linear quadratic regulator problem. Two iterative procedures, where data collected from the system are repeatedly used to compute new estimates of ...
Bowen Song, Andrea Iannelli
wiley   +1 more source

Compatibility of the evolution equation for heat flux in dual-phase-lag and three-phase-lag with the principles of thermodynamics. [PDF]

Sci Rep
Fawzy A, Mahmoud W, Rawy EK, Ghaleb AF.
europepmc   +1 more source