23,943 Result(s)
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Article
Open AccessNonlinear spatiotemporal characteristics of wind–rain flow around the trains passing through the tunnel entrance during rainstorms
Tropical storms present a significant risk to the safety of high-speed trains due to the extreme wind and rainfall they bring. This study employs Eulerian multiphase and Shear-Stress Transport k-ω turbulence mode...
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Impact of non-smooth threshold control on a reaction–diffusion predator–prey model with time delay
To explore the efficacy of integrated pest management, we modify the predator–prey (pest–natural enemy) model by incorporating Holling III functional response and transform it into a non-smooth Filippov contro...
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Response of hydraulic pipes to combined excitation in thermal environment
Generally, the hydraulic pipe of a warplane experiences the pulsating flow generated by the plunger pump and the strong excitation generated by the jet engine. Furthermore, the pipe is situated in a high-tempe...
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Dynamic rotation medical image encryption scheme based on improved Lorenz chaos
With the rapid development of AI technology and the continuous improvement of Internet technology, information technology and intelligent technology are gradually combined with medical treatment, which has giv...
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Adaptive prescribed performance tracking control for a class of nonlinear systems with actuator faults via a quantized event-triggered control scheme
This paper focuses on the issue of adaptive quantized event-triggered prescribed performance control for a class of uncertain nonlinear systems subject to actuator faults from a new point of view. First, a so-...
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Intervention analysis for fake news diffusion: an evolutionary game theory perspective
Controlling the dissemination of fake news is paramount for societal well-being. This paper explores how to govern fake news on social media, considering the reputation of both government and social media plat...
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Fatigue crack growth behavior of a nickel-based superalloy under turbine standard spectrum loads
In this investigation, the growth behavior of a crack in a nickel-based superalloy under a turbine standard load sequence was determined by experimental, analytical, and computational methods. In the first exp...
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Mechanical mechanism and parameter optimization of a tuned inerter damper with delayed fractional-order PID
This paper aims to tackle three challenges in the vibration absorber system with the fractional-order PID, i.e., the rarity of vibration mechanism analysis, limitations in order-taking, and performance enhance...
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Dynamic analysis of gear pairs considering the actual contact state of truncated asperities on the 3D rough surfaces and force-dependent mesh stiffness
Aiming at the problem of calculating the contact characteristics of gear pairs at the mesh position caused by the actual contact state (number, size, position, etc.) of truncated asperities under the action of...
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Neural adaptive dynamic surface control of an electro-hydraulic loading system for rail grinders
Electro-hydraulic loading system (EHLS) has been widely utilized in rail grinding industry for rail maintenance. Accurate tracking of the desired grinding force is critical to keep the rail surface at expected...
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Information feedback provokes multi-peak dynamics in the modern pandemic spreading
We propose a simple agent-based mathematical model of epidemic development capable of generating various multi-peak dynamic patterns typical of the COVID-19 pandemic. Each agent is assigned a very simple kind ...
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Article
Backlash compensation based oscillation suppression control for automatic loading manipulator arm with nonlinear extended state observer
A servo system of automatic loading manipulator arm (ALMA) with backlash nonlinearity is investigated in this paper to suppress the limit cycle oscillation. To provide a more accurate representation of the sys...
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Insights on the performance and dynamical characteristics of piezoelectric energy harvesters with dissipative viscoelastic impacts
The effectiveness and dynamical characteristics of a cantilevered-piezoelectric energy harvester with a tip mass is investigated. The harvester is connected to an electrical load resistance and is subjected to...
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Research on vibration suppression of nonlinear energy sink with linear dam** and geometrically nonlinear dam**
Nonlinear energy sink (NES) is a passive control device that can absorb a wide band, and it has the advantages of lightweight and strong robustness, which can play a very important role in vibration suppressio...
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Compact hybrid type electronic neuron and computational model of its dynamics
We propose a Neurosimilator, novel analog neuron circuit and mathematical model of its dynamics that both simulate with high precision the spiking behavior of known types of excitable cells. The analog circuit...
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Symmetric multi-double-scroll attractors in Hopfield neural network under pulse controlled memristor
Investigating the chaotic dynamics in neural networks holds significant importance in elucidating brain-like neural activities and guiding brain-like learning. The multi-scroll chaos, due to its intricate topo...
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Dynamic analysis and circuit design of tunable multi-vortex chaotic systems based on memristors
This paper proposes a new four-dimensional chaotic system that consists of two active magnetically controlled memristors. The dynamic characteristics of the system, including equilibrium points, Lyapunov expon...
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Trajectory tracking control for uncertain underactuated surface vessels with guaranteed prescribed performance under stochastic disturbances
The environmental disturbances acting on marine surface vessels are naturally stochastic. The control performance may be seriously deteriorated if the stochastic sea loads are ignored in control design. In thi...
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A novel feature dimensionality reduction method for gearbox fault diagnosis with HMSDE, DANCo-DDMA and KELM
This paper proposes a gearbox fault diagnosis method with HMSDE, DANCo-DDMA and AOA-KELM. Firstly, the raw HMSDE features are extracted from the raw time domain signals, then, the intrinsic dimension of the HM...
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A non-identification adaptive backstep** approach to global output feedback tracking control of nonlinear systems with input quantization
A new output feedback control approach is proposed to address the global practical tracking issue for a class of nonlinear input-quantization systems with polynomial growth condition, which introduces a non-id...