Results 51 to 60 of about 20,487,524 (202)

Aeroelastic dynamic response and control of an airfoil section with control surface nonlinearities [PDF]

, 2010
Nonlinearities in aircraft mechanisms are inevitable, especially in the control system. It is necessary to investigate the effects of them on the dynamic response and control performance of aeroelastic system.
Shijun Guo, Xiang, Jinwu, Guo, Shijun J., Li, Daochun, Jinwu Xiang, Daochun Li   +5 more
core   +1 more source

Inertial‐Based LQG Control: A New Look at Inverted‐Pendulum Stabilization

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Linear‐quadratic Gaussian (LQG) control is a well‐established method for optimal control through state estimation, particularly in stabilizing an inverted pendulum on a cart. In standard laboratory setups, sensor redundancy enables direct measurement of configuration variables using displacement sensors and rotary encoders. However, in outdoor
Daniel Engelsman, Itzik Klein
wiley   +1 more source

Hybrid Quasi-Optimal PID-SDRE Quadrotor Control

Energies, 2022
In the paper, a new cascade control system for an autonomous flight of an unmanned aerial vehicle (UAV) based on Proportional–Integral–Derivative (PID) and finite-time State-Dependent Riccati Equation (SDRE) control is proposed.
Wojciech Giernacki, Sławomir Stępień, Marcin Chodnicki, Agnieszka Wróblewska   +3 more
doaj   +1 more source

Suboptimal Model Predictive Control With a Computation Governor: Stability, Recursive Feasibility, and Applications to Alternating Direction Method of Multipliers

Optimal Control Applications and Methods, EarlyView.
Computational governor is shown which simultaneously adjusts the reference and adjusts the constraints. ABSTRACT The paper considers a computational governor strategy to facilitate the implementation of Model Predictive Control (MPC) based on inexact optimization when the time available to compute the solution may be insufficient.
Steven van Leeuwen, Ilya Kolmanovsky
wiley   +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

SDRE-based primary control of DC Microgrids equipped by a fault detection/isolation mechanism

Energy Reports, 2022
Due to the nonlinear dynamics of direct current (DC) microgrids, the existence of input constraints, and their multi-input multi-output (MIMO) nature, classical linear controllers cannot provide an appropriate performance in a wide range of operations ...
Yazdan Batmani, Yousef Khayat, Assad Salimi, Hassan Bevrani, Sohrab Mirsaeidi, Charalambos Konstantinou   +5 more
doaj   +1 more source

Optimal Homogeneous ℒp$$ {\boldsymbol{\mathcal{L}}}_{\boldsymbol{p}} $$‐Gain Controller

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Nonlinear ℋ∞$$ {\mathscr{H}}_{\infty } $$‐controllers are designed for arbitrarily weighted, continuous homogeneous systems with a focus on systems affine in the control input. Based on the homogeneous ℒp$$ {\mathcal{L}}_p $$‐norm, the input–output behavior is quantified in terms of the homogeneous ℒp$$ {\mathcal{L}}_p $$‐gain as a ...
Daipeng Zhang, Benjamin Calmbach, Jaime A. Moreno, Johann Reger   +3 more
wiley   +1 more source

Nonlinear observer-based fault detection and isolation for wind turbines [PDF]

, 2014
This paper is concerned with the development of a novel nonlinear observer-based scheme for early Fault Detection and Isolation (FDI) in wind turbines.
Hwas, Abdulhamed Moh Suliman, Katebi, Reza   +1 more
core   +4 more sources

Robust Velocity and Load Observer for a General Noisy Rotating Machine

Machines, 2022
This paper is focused on the design of a nonlinear observer for a rotatory machine with noise-affected output. It is assumed that the system is subject to bounded perturbations, and the original linear model of the machine is reformulated as a nonlinear ...
Carlos Aguilar-Ibanez, Manuel A. Jimenez-Lizarraga, Isaac Gandarilla-Esparza, Javier Moreno-Valenzuela, Belem Saldivar, Miguel S. Suarez-Castanon, Jose de Jesus Rubio   +6 more
doaj   +1 more source

A PD-Type State-Dependent Riccati Equation With Iterative Learning Augmentation for Mechanical Systems

IEEE/CAA Journal of Automatica Sinica, 2022
This work proposes a novel proportional-derivative (PD)-type state-dependent Riccati equation (SDRE) approach with iterative learning control (ILC) augmentation. On the one hand, the PD-type control gains could adopt many useful available criteria and tools of conventional PD controllers.
Saeed Rafee Nekoo, José Ángel Acosta, Guillermo Heredia, Anibal Ollero   +3 more
openaire   +5 more sources