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309,247 Results Found

  • Article
  • Open Access
377 Views
16 Pages

Lie Saturate and Controllability

  • Victor Ayala,
  • Bruno A. Rodrigues,
  • Alexandre J. Santana and
  • Maria Luisa Torreblanca Todco

21 November 2025

We study the controllability of right-invariant bilinear systems on the complex and quaternionic special linear groups Sl(n,C) and Sl(n,H). The analysis relies on the Lie saturateLS(Γ), which characterizes controllability through convexity and...

  • Article
  • Open Access
12 Citations
2,296 Views
9 Pages

4 November 2020

In the paper semilinear, finite-dimensional, control systems with multiple time variable point delays in admissible controls are considered. Using Rothe’s fixed-point theorem, sufficient controllability conditions are formulated. The results of...

  • Article
  • Open Access
5 Citations
2,435 Views
12 Pages

1 February 2021

A model of production funds acquisition, which includes two differential links of the zero order and two series-connected inertial links, is considered in a one-sector economy. Zero-order differential links correspond to the equations of the Ramsey m...

  • Article
  • Open Access
1 Citations
2,094 Views
14 Pages

This paper examines the controllability of a class of heterogeneous networked systems where the nodes are linear time-invariant systems (LTI), and the network topology is triangularizable. The literature contains necessary and sufficient conditions f...

  • Article
  • Open Access
7 Citations
2,239 Views
16 Pages

Controllability of Fractional Complex Networks

  • Xionggai Bao,
  • Weiyuan Ma and
  • Xin Li

Controllability is a fundamental issue in the field of fractional complex network control, yet it has not received adequate attention in the past. This paper is dedicated to exploring the controllability of complex networks involving the Caputo fract...

  • Article
  • Open Access
4 Citations
2,453 Views
17 Pages

19 November 2024

The motion control of vehicles poses distinct challenges for both vehicle stability and path tracking, especially under critical environmental and driving conditions. Overactuated vehicles can effectively utilize the available tyre–road frictio...

  • Article
  • Open Access
391 Views
14 Pages

27 November 2025

We study an exact controllability problem for a system governed by the heat equation with Neumann boundary control and boundary noise. We reduce the control problem to a moment problem for which we establish sufficient conditions for its resolution.

  • Article
  • Open Access
5 Citations
1,689 Views
27 Pages

Dynamic Controllability of Processes without Surprises

  • Johann Eder,
  • Marco Franceschetti and
  • Josef Lubas

29 January 2022

Dynamic controllability guarantees that a process control can steer the execution of a business process without violating any temporal constraints although some tasks have uncontrollable durations. However, it has been shown that dynamic controllabil...

  • Article
  • Open Access
936 Views
17 Pages

25 October 2024

This study examines the concept of impulse controllability within singular hybrid coupled systems through the utilisation of decentralised proportional plus derivative (P-D) output feedback. By employing the Differential Mean Value Theorem, the nonli...

  • Article
  • Open Access
6 Citations
3,672 Views
22 Pages

2 December 2022

This paper deals with the observability, controllability, and command and control strategy in the Botnet Defense System (BDS) that disinfects malicious botnets with white-hat botnets. The BDS defends an IoT system built over the Internet. The Interne...

  • Article
  • Open Access
545 Views
15 Pages

Controllability of Bilinear Systems: Lie Theory Approach and Control Sets on Projective Spaces

  • Oscar Raúl Condori Mamani,
  • Bartolome Valero Larico,
  • María Luisa Torreblanca and
  • Wolfgang Kliemann

15 July 2025

Bilinear systems can be developed from the point of view of time-varying linear differential equations or from the symmetry of Lie theory, in particular Lie algebras, Lie groups, and Lie semigroups. For bilinear control systems with bounded control r...

  • Article
  • Open Access
720 Views
13 Pages

5 November 2025

Biological neural networks undergo dynamic structural and functional changes during development, yet how their controllability evolves across different life stages remains largely unexplored. Here, we investigate the neural network of Caenorhabditis ...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,670 Views
22 Pages

22 January 2025

This work solves the exact controllability to zero in the final time for a linear parabolic problem when the control only acts in a part of the spatial domain. Specifically, it is proved, by compactness arguments, the existence of a partially distrib...

  • Article
  • Open Access
5 Citations
1,589 Views
19 Pages

14 August 2023

We study the existence/uniqueness of conformable fractional type impulsive nonlinear systems as well as the controllability of linear/semilinear conformable fractional type impulsive controlled systems. Using the conformable fractional derivative app...

  • Article
  • Open Access
1 Citations
2,479 Views
12 Pages

15 June 2023

From the perspective of network attackers, finding attack sequences that can cause significant damage to network controllability is an important task, which also helps defenders improve robustness during network constructions. Therefore, developing e...

  • Article
  • Open Access
9 Citations
1,903 Views
15 Pages

Controllability of Impulsive Neutral Fractional Stochastic Systems

  • Qura Tul Ain,
  • Muhammad Nadeem,
  • Ali Akgül and
  • Manuel De la Sen

9 December 2022

The study of dynamic systems appears in various aspects of dynamical structures such as decomposition, decoupling, observability, and controllability. In the present research, we study the controllability of fractional stochastic systems (FSF) and ex...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,042 Views
16 Pages

18 December 2022

We study the regional controllability problem for delayed fractional control systems through the use of the standard Caputo derivative. First, we recall several fundamental results and introduce the family of fractional-order systems under considerat...

  • Feature Paper
  • Article
  • Open Access
7 Citations
3,455 Views
14 Pages

Experimental Research on Controllability and Emissions of Jet-Controlled Compression Ignition Engine

  • Hua Tian,
  • Jingchen Cui,
  • Tianhao Yang,
  • Yao Fu,
  • Jiangping Tian and
  • Wuqiang Long

31 July 2019

Low-temperature combustions (LTCs), such as homogeneous charge compression ignition (HCCI), could achieve high thermal efficiency and low engine emissions by combining the advantages of spark-ignited (SI) engines and compression-ignited (CI) engines....

  • Article
  • Open Access
939 Views
23 Pages

This paper presents a unified framework for controllability and minimum-energy control of linear fractional differential systems with Caputo derivative order γ(0,1) and fully time-varying state and control delays. An explicit mild solutio...

  • Article
  • Open Access
3 Citations
1,441 Views
16 Pages

8 July 2024

The controllability of complex networks is a core issue in network research. Assessing the controllability robustness of networks under destructive attacks holds significant practical importance. This paper studies the controllability of networks fro...

  • Article
  • Open Access
3 Citations
2,164 Views
15 Pages

13 November 2022

When a network is attacked, the network controllability decreases and the network is at risk of collapse. A network with good controllability robustness can better maintain its own controllability while under attack to provide time for network recove...

  • Article
  • Open Access
34 Citations
7,433 Views
15 Pages

Wireless DC Motor Drives with Selectability and Controllability

  • Chaoqiang Jiang,
  • K.T. Chau,
  • Chunhua Liu and
  • Wei Han

4 January 2017

This paper proposes and implements the concept of wireless DC motor drives, which can achieve the abilities of selective driving and controllable speed. Due to different resonant frequencies of the multiple energy receivers of the associated DC motor...

  • Article
  • Open Access
9 Citations
3,080 Views
30 Pages

Robust Control of Shunt Active Power Filters: A Dynamical Model-Based Approach with Verified Controllability

  • Jorge-Humberto Urrea-Quintero,
  • Nicolás Muñoz-Galeano and
  • Jesús M. López-Lezama

27 November 2020

This paper presents the robust control of Three-Leg Split-Capacitor Shunt Active Power Filters (TLSC SAPFs) by means of structured H controllers for reactive, unbalanced, and harmonic compensation and the DC-link bus voltage regulation. Robust...

  • Article
  • Open Access
3 Citations
2,519 Views
13 Pages

Controllability of Brain Neural Networks in Learning Disorders—A Geometric Approach

  • Maria Isabel García-Planas and
  • Maria Victoria García-Camba

21 January 2022

The human brain can be interpreted mathematically as a linear dynamical system that shifts through various cognitive regions promoting more or less complicated behaviors. The dynamics of brain neural network play a considerable role in cognitive func...

  • Article
  • Open Access
2 Citations
1,815 Views
16 Pages

Finite-Approximate Controllability of ν-Caputo Fractional Systems

  • Muath Awadalla,
  • Nazim I. Mahmudov and
  • Jihan Alahmadi

This paper introduces a methodology for examining finite-approximate controllability in Hilbert spaces for linear/semilinear ν-Caputo fractional evolution equations. A novel criterion for achieving finite-approximate controllability in linear ν...

  • Article
  • Open Access
6 Citations
1,866 Views
10 Pages

Null Controllability of Hilfer Fractional Stochastic Differential Inclusions

  • Hamdy M. Ahmed,
  • Mahmoud M. El-Borai,
  • Wagdy El-Sayed and
  • Alaa Elbadrawi

This paper gives the null controllability for nonlocal stochastic differential inclusion with the Hilfer fractional derivative and Clarke subdifferential. Sufficient conditions for null controllability of nonlocal Hilfer fractional stochastic differe...

  • Article
  • Open Access
1 Citations
1,650 Views
20 Pages

Controllability of Stochastic Delay Systems Driven by the Rosenblatt Process

  • Barakah Almarri,
  • Xingtao Wang and
  • Ahmed M. Elshenhab

11 November 2022

In this work, we consider dynamical systems of linear and nonlinear stochastic delay-differential equations driven by the Rosenblatt process. With the aid of the delayed matrix functions of these systems, we derive the controllability results as an a...

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,294 Views
11 Pages

4 August 2020

In this paper we outline a certain way of understanding of macroscopically uncontrollable emergence of the so called Mannesmann effect by means of its induced controllable quantum-mechanical background. In other words, we factually present a modus op...

  • Article
  • Open Access
1,044 Views
16 Pages

26 July 2023

We explore the simultaneous exact controllability of mean and variance of an insurance policy by utilizing the benefit St and premium Pt as control inputs to manage the policy value tV and the variance 2σt of future losses. The goal is to determine w...

  • Article
  • Open Access
1,487 Views
15 Pages

15 December 2023

A control problem with final overdetermination is considered for the higher-order nonlinear Schrödinger equation on a bounded interval. The boundary condition on the space derivative is chosen as the control. Results on the global existence of s...

  • Article
  • Open Access
33 Citations
6,375 Views
15 Pages

22 September 2015

This paper proposes a new method for assessing the vulnerability of power systems based on the controllability theories of complex networks. A novel controllability index is established, taking into consideration the full controllability of the power...

  • Feature Paper
  • Article
  • Open Access
15 Citations
3,646 Views
16 Pages

Approximate Controllability of Sub-Diffusion Equation with Impulsive Condition

  • Lakshman Mahto,
  • Syed Abbas,
  • Mokhtar Hafayed and
  • Hari M. Srivastava

17 February 2019

In this work, we study an impulsive sub-diffusion equation as a fractional diffusion equation of order α ( 0 , 1 ) . Existence, uniqueness and regularity of solution of the problem is established via eigenfunction expansion. Moreo...

  • Article
  • Open Access
8 Citations
2,621 Views
21 Pages

In this paper, we investigate the controllability conditions of linear control systems involving distinct local fractional derivatives. Sufficient conditions for controllability using Kalman rank conditions and the Gramian matrix are presented. We sh...

  • Article
  • Open Access
11 Citations
2,810 Views
17 Pages

On the Controllability of a System Modeling Cell Dynamics Related to Leukemia

  • Ioan Ştefan Haplea,
  • Lorand Gabriel Parajdi and
  • Radu Precup

3 October 2021

In this paper, two control problems for a symmetric model of cell dynamics related to leukemia are considered. The first one, in connection with classical chemotherapy, is that the evolution of the disease under treatment should follow a prescribed t...

  • Article
  • Open Access
9 Citations
4,075 Views
12 Pages

Controllability Comparison of the Four-Product Petlyuk Dividing Wall Distillation Column Using Temperature Control Schemes

  • Xing Qian,
  • Rui Liu,
  • Kejin Huang,
  • Haisheng Chen,
  • Yang Yuan,
  • Liang Zhang and
  • Shaofeng Wang

16 January 2020

An effective process intensification strategy based on dividing walls shows promising energy-saving results for distillation processes. The three-product Petlyuk dividing wall distillation columns (DWDCs) are able to save approximately 30% energy in...

  • Article
  • Open Access
4 Citations
3,451 Views
27 Pages

21 March 2019

A singularly perturbed linear time-dependent controlled system with multiple point-wise delays and distributed delays in the state and control variables is considered. The delays are small, of order of a small positive multiplier for a part of the de...

  • Article
  • Open Access
2,049 Views
17 Pages

21 March 2021

In this paper, we discuss the approximate controllability for a class of retarded semilinear neutral control systems of fractional order by investigating the relations between the reachable set of the semilinear retarded neutral system of fractional...

  • Article
  • Open Access
2 Citations
1,540 Views
18 Pages

21 May 2024

Distributed Energies Resources (DERs) can be controlled for supporting the voltage regulation at nodes of an Active Distribution Network (ADN) where they are connected. However, since the ADN is a Multi-Input Multi-Output (MIMO) system with coupled d...

  • Article
  • Open Access
4 Citations
2,060 Views
30 Pages

24 August 2022

Approximate controllability of two types of nonlinear stochastic generalized systems is investigated in the sense of mild solution in Hilbert spaces. Firstly, the approximate controllability of semilinear stochastic generalized systems with control o...

  • Article
  • Open Access
5 Citations
1,973 Views
21 Pages

Controllability and Observability Analysis of a Fractional-Order Neutral Pantograph System

  • Irshad Ahmad,
  • Saeed Ahmad,
  • Ghaus ur Rahman,
  • Shabir Ahmad and
  • Wajaree Weera

1 January 2023

In the recent past, a number of research articles have explored the stability, existence, and uniqueness of the solutions and controllability of dynamical systems with a fractional order (FO). Nevertheless, aside from the controllability and other dy...

  • Article
  • Open Access
21 Citations
2,974 Views
18 Pages

Transformed Structural Properties Method to Determine the Controllability and Observability of Robots

  • Dany Ivan Martinez,
  • José de Jesús Rubio,
  • Victor Garcia,
  • Tomas Miguel Vargas,
  • Marco Antonio Islas,
  • Jaime Pacheco,
  • Guadalupe Juliana Gutierrez,
  • Jesus Alberto Meda-Campaña,
  • Dante Mujica-Vargas and
  • Carlos Aguilar-Ibañez

30 March 2021

Many investigations use a linearization method, and others use a structural properties method to determine the controllability and observability of robots. In this study, we propose a transformed structural properties method to determine the controll...

  • Article
  • Open Access
3 Citations
2,350 Views
21 Pages

Multi-Objective Optimal Design and Operation of Heat Exchanger Networks with Controllability Consideration

  • Siwen Gu,
  • Xiuna Zhuang,
  • Chenying Li,
  • Shuai Zhang,
  • Jiaan Wang and
  • Yu Zhuang

15 November 2022

Controllability reflects the ease that a process can be controlled in practical operating environment. However, an unclear influence between the HEN synthesis and the control structure selection has been not investigated for the work of controllabili...

  • Article
  • Open Access
4 Citations
1,578 Views
20 Pages

Structural Design and Controllability of Magnetorheological Grease Buffers under Impact Loading

  • Gaoyang Kong,
  • Qing Ouyang,
  • Hongsheng Hu,
  • Wenfeng Xiang and
  • Wei Zhao

29 June 2023

Shock loads can pose a great threat to personnel or instruments, and efficient control of the buffering process is an effective means of reducing damage from shock energy. In this paper, magneto-rheological grease was used as the internal controllabl...

  • Article
  • Open Access
3 Citations
2,039 Views
11 Pages

Controllability Results for First Order Linear Fuzzy Differential Systems

  • Rui Liu,
  • Michal Fečkan,
  • Donal O’Regan and
  • Jinrong Wang

6 April 2022

In this paper, we investigate the controllability of first order linear fuzzy differential systems. We use the direct construction method to derive the controllability results for three types of first order linear fuzzy controlled systems via (c1)-so...

  • Article
  • Open Access
6 Citations
2,156 Views
18 Pages

In this study, time-delayed stochastic dynamical systems of linear and nonlinear equations are discussed. The existence and uniqueness of the stochastic semilinear time-delay system in finite dimensional space is investigated. Introducing the delay G...

  • Article
  • Open Access
1,498 Views
15 Pages

In this article, the existence and uniqueness of mild solutions are investigated for Hilfer fractional evolution systems. Particularly, the approximate controllability is also investigated under some essential conditions by applying the sequence meth...

  • Article
  • Open Access
3 Citations
1,234 Views
21 Pages

This paper investigates the controllability of Hilfer fractional stochastic evolution equations (HFSEEs). Initially, we obtain a conclusion regarding the approximate controllability of HFSEEs by employing the Tikhonov-type regularization method and S...

  • Article
  • Open Access
10 Citations
3,673 Views
8 Pages

Helicopters are widely used for air transportation and aerial work with cargo on external cables, one of the most challenging and dangerous uses. The main reason for the flight complication is the change in the controllability characteristics of the...

  • Article
  • Open Access
2 Citations
2,040 Views
24 Pages

Controllability Results for First Order Impulsive Fuzzy Differential Systems

  • Rui Liu,
  • Michal Fečkan,
  • Donal O’Regan and
  • Jinrong Wang

14 September 2022

In this paper, we investigate the controllability of first-order impulsive fuzzy differential equations. Using the direct construction method, the controllability of first-order linear impulsive fuzzy differential equations is considered with a<0,...

  • Article
  • Open Access
8 Citations
2,325 Views
10 Pages

1 December 2020

This paper is concerned with controllability of nonlinear fractional dynamical systems with a Mittag–Leffler kernel. First, the solution of fractional dynamical systems with a Mittag–Leffler kernel is given by Laplace transform. In additi...

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