Results 11 to 20 of about 720,720 (308)

An Extension Algorithm of Regional Eigenvalue Assignment Controller Design for Nonlinear Systems

open access: yesAerospace, 2023
This paper provides a new method to nonlinear control theory, which is developed from the eigenvalue assignment method. The main purpose of this method is to locate the pointwise eigenvalues of the linear-like structure built by freezing the nonlinear ...
Ahmet Çağrı Arıcan   +3 more
doaj   +1 more source

Fractional Time–Invariant Compartmental Linear Systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2023
Fractional time-invariant compartmental linear systems are introduced. Controllability and observability of these systems are analyzed. The eigenvalue assignment problem of compartmental linear systems is considered and illustrated with a numerical ...
Kaczorek Tadeusz
doaj   +1 more source

Robust Assignment of Natural Frequencies and Antiresonances in Vibrating Systems through Dynamic Structural Modification

open access: yesShock and Vibration, 2021
This paper proposes a novel method for the robust partial assignment of natural frequencies and antiresonances, together with the partial assignment of the related eigenvectors, in lightly damped linear vibrating systems.
Roberto Caracciolo   +2 more
doaj   +1 more source

On the tuning of a nonlinear energy‐based regulator for the positioning of a fully actuated surface marine craft

open access: yesIET Control Theory & Applications, 2021
The authors address the problem of tuning a non‐linear energy‐based regulator for the positioning of a surface marine craft. Interconnection and damping assignment passivity‐based control (IDA‐PBC) is used for the control design, resulting in passive ...
Christina Kazantzidou   +3 more
doaj   +1 more source

An Approximation-Based Design Optimization Approach to Eigenfrequency Assignment for Flexible Multibody Systems

open access: yesApplied Sciences, 2021
The use of flexible multibody simulation has increased significantly over recent years due to the increasingly lightweight nature of mechanical systems.
Roberto Belotti   +3 more
doaj   +1 more source

An Iterative Approach to Eigenvalue Assignment for Nonlinear Systems. [PDF]

open access: yesProceedings of the 45th IEEE Conference on Decision and Control, 2006
In this paper, the authors present a method for controlling a nonlinear system by using the ideas of eigenvalues assignment. A time-varying approach to nonlinear exponential stability via eigenvalue placement is studied based on an iteration technique that approaches a nonlinear system by a sequence of linear time varying equations.
Maria Tomas-Rodriguez, Stephen P. Banks
openaire   +2 more sources

A Five-Component Decomposition Method with General Rotated Dihedral Scattering Model and Cross-Pol Power Assignment

open access: yesRemote Sensing, 2023
The model-based polarimetric decomposition is extensively studied due to its simplicity and clear physical interpretation of Polarimetric Synthetic Aperture Radar (PolSAR) data.
Yancui Duan   +4 more
doaj   +1 more source

Change of nullity of a graph under two operations

open access: yesKuwait Journal of Science, 2021
Two adjacent or non-adjacent vertices of a graph G are said to be identified, if they are combined to form one vertex whose neighbor is the union of their neighborhoods (ignoring any loops or multiple edges formed).
Gohdar H. Mohiaddin, Khidir R. Sharaf
doaj   +1 more source

A new general method for assigning frequencies with low spillover through structural modifications

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
By modifying the mass and stiffness parameters of a structure, a subset of its natural frequencies can be assigned. However, such an assignment is usually accompanied with changes of the remaining frequencies, known as ‘spillover’.
Zihao Liu   +3 more
doaj   +1 more source

A sliding mode frequency control scheme for wind turbines participating in frequency regulation support in power systems

open access: yesFrontiers in Energy Research, 2023
With high penetration of wind power, the apparent inertia of power systems is decreased, which seriously affects the safety and stability of the system frequency.
Dingwen Lu, Zhihong Ren, Jianwei Yang
doaj   +1 more source

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