Results 51 to 60 of about 28,299,233 (201)

Optimal Control of a Flexible Spacecraft in a Proximity Operation Using State Dependent Riccati Equation Approach [PDF]

فصلنامه علوم و فناوری فضایی, 2015
This paper presents a suitable technique for nonlinear control of a flexible spacecraft in proximity operations. To do proximity operations well, the pursuer spacecraft must place itself in a pre specified location relative to target and align its ...
Mohammad Reza Mortazavi, Ali Reza Alikhani   +1 more
doaj  

Discrete Implementations Modify the Intuition of Final Set Adjustment in Barrier Function Based Control

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper establishes an implementation‐aware framework for Barrier Function Adaptation (BFA) and shows that discrete‐time realizations fundamentally alter the logic of final‐set adjustment. In particular, sufficient conditions are derived to preserve the key benefits of BFA (predefined performance, gain adaptation with uncertain perturbation
Luis Ovalle, Andrés González, Leonid Fridman, Meléndez Alfredo   +3 more
wiley   +1 more source

Gradient‐ and Newton‐Based Unit Vector Extremum Seeking Control

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper proposes new methods for stable and efficient convergence in multivariable extremum seeking control (ESC) using sliding mode techniques. Inspired by classical sliding modes and finite‐time control, the approach integrates these ideas into gradient‐ and Newton‐based ESC schemes with sinusoidal perturbations.
Roberto Luo, Victor Hugo Pereira Rodrigues, Tiago Roux Oliveira, Miroslav Krstic   +3 more
wiley   +1 more source

Nonlinear State Estimation and Control for Chaos Suppression in MEMS Resonator

Shock and Vibration, 2013
During the last decade the chaotic behavior in MEMS resonators have been reported in a number of works. Here, the chaotic behavior of a micro-mechanical resonator is suppressed.
Angelo Marcelo Tusset, Átila Madureira Bueno, Claudinor Bitencourt Nascimento, Mauricio dos Santos Kaster, José Manoel Balthazar   +4 more
doaj   +1 more source

Control Design for Dengue Fever Model with Disturbance

Communication in Biomathematical Sciences, 2023
A mathematical model has become a useful tool to predict and control dengue fever dynamics. In reality, the dynamic of dengue fever transmission can be disturbed by uncertainty measurements, so it is needed to consider the disturbance in the model. Then,
Hanna Hilyati Aulia, Roberd Saragih, Dewi Handayani   +2 more
doaj   +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

An approximation method for the stabilizing solution of the Hamilton-Jacobi equation for integrable systems using Hamiltonian perturbation theory [PDF]

, 2006
In this report, a method for approximating the stabilizing solution of the Hamilton-Jacobi equation for integrable systems is proposed using symplectic geometry and a Hamiltonian perturbation technique.
Sakamoto, Noboru, Sakamoto, N., Sakamoto, Noboru,, van der Schaft, Arjan, Schaft, Arjan J. van der, Noboru Sakamoto, Schaft, Arjan J. van der,, Schaft, Arjan J. van der; id_orcid, van der Schaft, AJ; id_orcid, Arjan J. van der Schaft, van der Schaft, AJ   +10 more
core   +4 more sources

Optimization of Trajectory Tracking Control in Task Space for Dual-arm Space Robot

Jixie chuandong, 2020
For trajectory tracking control of a dual-arm space robot with uncontrolled base position and controlled base attitude in task space， an optimal control method based on state dependent Riccati equation （SDRE） is proposed. Firstly， based on the kinematics
Shuo Li, Xixing Li, Yan Zhao
doaj  

LMI-Based Model Predictive Control for Underactuated Surface Vessels with Input Constraints

Abstract and Applied Analysis, 2014
A nonlinear model predictive control (MPC) is proposed for underactuated surface vessel (USV) with constrained inputs. Aimed at the special structure of USV, a state-dependent coefficient (SDC) under the given USV is constructed in terms of ...
Lutao Liu, Zhilin Liu, Jun Zhang
doaj   +1 more source

A Nonlinear Optimal Guidance Law with Terminal Impact Angle Constraint [PDF]

International Journal of Computational Intelligence Systems, 2011
State-dependent Riccati equation (SDRE) techniques are rapidly emerging as general design methods for nonlinear controllers. A nonlinear optimal guidance law with impact angle constraint is derived for planar engagements to attack stationary targets. The
Haoping She, Shuxing Yang, Hui Ni, Horst Baier   +3 more
doaj   +1 more source