Results 11 to 20 of about 7,053 (235)

Optimal design of a hysteretically damped dynamic vibration absorber

open access: yesMechanical Engineering Journal, 2020
In the optimization of dynamic vibration absorbers (DVAs), it is generally assumed that the damping force changes in proportion to the velocity of the object; this damping is called viscous damping.
Toshihiko ASAMI   +2 more
doaj   +1 more source

COVID-19: From Limit Cycle to Stable Focus

open access: yesMathematics, 2023
The study aims at investigating a new fundamental property of infectious diseases with natural adaptive immunity that weakens over time—qualitative change (bifurcation) in the behavior of the “virus vs.
Alexander Sokolov, Vladimir Voloshinov
doaj   +1 more source

Resonance in the Cart-Pendulum System—An Asymptotic Approach

open access: yesApplied Sciences, 2021
The major objective of this research is to study the planar dynamical motion of 2DOF of an auto-parametric pendulum attached with a damped system. Using Lagrange’s equations in terms of generalized coordinates, the fundamental equations of motion (EOM ...
Wael S. Amer   +3 more
doaj   +1 more source

Optimization of a Non-Traditional Vibration Absorber for Vibration Suppression and Energy Harvesting

open access: yesVibration, 2022
This paper investigates the optimization of a non-traditional vibration absorber for simultaneous vibration suppression and energy harvesting. Unlike a traditional vibration absorber, the non-traditional vibration absorber has its damper connected ...
Miao Yuan   +3 more
doaj   +1 more source

Parameter Optimization and Application for the Inerter-Based Tuned Type Dynamic Vibration Absorbers

open access: yesBuildings, 2022
As an acceleration-type mechanical element, inerter element has been widely used in the dynamic suppressing field. In this paper, a tuned mass damper with inerter (TMDI) is presented for vibration control and energy dissipation.
Xiaoxiang Wu   +4 more
doaj   +1 more source

Study on Interactive Damping of Primary‐Secondary Coupled System

open access: yesShock and Vibration, 2019
In order to study the interactive damping of a primary‐secondary coupled system, three damping strategies are presented. Based on it, three dynamic models were established: the 2‐DOF series model, spatial dynamic model, and 3‐DOF series model. According to the concept and calculation methods of random vibration, the displacement, velocity, and ...
Lihua Zhu, Haoyi Zhou, Jun Dai
openaire   +2 more sources

Four-way Classification of Tabla Strokes with Transfer Learning Using Western Drums

open access: yesTransactions of the International Society for Music Information Retrieval, 2023
Motivated by the musicological relevance of tabla stroke categories in tabla accompaniment playing, we present an automatic four-way stroke classification system based on convolutional neural networks, while recognising the challenge of instrument- and ...
Rohit M. Ananthanarayana   +2 more
doaj   +1 more source

Design and implementation of energy reshaping based fuzzy logic control for optimal power extraction of PMSG wind energy converter

open access: yesFrontiers in Energy Research, 2022
Given the greater penetration of wind power, the impact of wind generators on grid electricity reliability imposes additional requirements. One of the most common technologies in wind power generating schemes is the permanent magnet synchronous generator
Ashish Jaiswal   +8 more
doaj   +1 more source

Contactless Interrogation System for Capacitive Sensors with Time-Gated Technique

open access: yesProceedings, 2017
This paper presents a measurement technique and system for the contactless interrogation of capacitive sensors via electromagnetic coupling. The interrogation unit employs a primary coil to periodically excite the capacitive sensor connected to a ...
Mehedi Masud   +4 more
doaj   +1 more source

Interconnection and damping assignment passivity-based non-linear observer control for efficiency maximization of permanent magnet synchronous motor

open access: yesEnergy Reports, 2022
The permanent magnet synchronous motor (PMSM) has several advantages over the DC motor and is gradually replacing it in the industry. The dynamics of the PMSM are described by non-linear equations; it is sensitive to unknown external disturbances (load),
Youcef Belkhier   +6 more
doaj   +1 more source

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