Results 131 to 140 of about 1,083,308 (333)

Research on predictive control of helicopter/engine based on LMS adaptive torsional vibration suppression

Journal of Low Frequency Noise, Vibration and Active Control, 2018
In order to achieve the fast response of turboshaft engine combined with torsional vibration, a predictive controller of helicopter/engine based on the least mean square adaptive torsional vibration suppression is proposed and designed.
Yong Wang, Qiangang Zheng, Haibo Zhang, Haoying Chen   +3 more
doaj   +1 more source

Maneuverable Multilegged Locomotion through Anisotropically Arranged Soft Backbones in a Single‐Actuator Modular Miniature Robot

Advanced Intelligent Systems, EarlyView.
A modular eight‐legged robot exploits anisotropically oriented soft I‐beam backbones to transmit vibration from a single unbalanced‐mass actuator, producing frequency‐dependent multimodal gaits. A pseudo‐rigid‐body model enables high‐fidelity MuJoCo simulation, while Bayesian parameter identification and reinforcement learning yield robust control ...
Yiğit Yaman, Burak Arslan, Ömer Çağrı Ergin, Daniel M. Aukes, Onur Özcan   +4 more
wiley   +1 more source

Torsional vibration of cracked carbon nanotubes with torsional restraints using Eringen’s nonlocal differential model

Journal of Low Frequency Noise, Vibration and Active Control, 2019
Free torsional vibration of cracked carbon nanotubes with elastic torsional boundary conditions is studied. Eringen’s nonlocal elasticity theory is used in the analysis. Two similar rotation functions are represented by two Fourier sine series.
Mustafa Ö Yayli, Suheyla Y Kandemir, Ali E Çerçevik   +2 more
doaj   +1 more source

Bioprinted Excitable Tissues with Multistimulation Systems for Promoting Function and Maturation

Advanced NanoBiomed Research, EarlyView.
This review provides an overview of stimulation strategies used to enhance the functional maturation of bioprinted excitable tissues. It addresses key limitations in physiological performance of bioprinted excitable tissues, outlines major stimulation modalities—including electrical, mechanical, optical, magnetic, ultrasound, and hybrid—and examines ...
Uijung Yong, Jinseon Park, Jinah Jang
wiley   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

Mode Transition Phenomenon of Herringbone Gear Power-split Transmission System

Jixie chuandong, 2019
The mode transition will bring about the dramatical changes of the dynamics characteristics of the herringbone gear power-split transmission system， so the mode transition phenomenon must be analyzed in the process of the transmission system dynamic ...
Jincheng Dong, Sanmin Wang
doaj  

Experimental investigation of torsional vibration isolation using Magneto Rheological Elastomer

MATEC Web of Conferences, 2018
Rotating systems suffer from lateral and torsional vibrations which have detrimental effect on the roto-dynamic performance. Many available technologies such as vibration isolators and vibration absorbers deal with the torsional vibrations to a certain ...
Praveen Shenoy K, Singh Abhishek Kumar, Sai Aditya Raman K, Gangadharan K. V.   +3 more
doaj   +1 more source

Quantum Chemistry Investigation of Linear and Nonlinear (chir)optical Properties of Oligoamide Foldamers

ChemistryEurope, EarlyView.
The linear and nonlinear (chir)optical properties of four oligoamide foldamers with different donor groups are studied by means of time‐dependent density functional theory calculations. It is shown that stronger donors yield larger hyperpolarizabilities due to low‐lying charge–transfer states. The agreement with the experiments concerning the key bands
Komlanvi Sèvi Kaka, Andrea Bonvicini, Yann Ferrand, Céline Olivier, Vincent Rodriguez, Benoît Champagne   +5 more
wiley   +1 more source

Field verification of lateral-torsional coupling effects on rotor instabilities in centrifugal compressors [PDF]

Lateral and torsional vibration data obtained on a centrifugal compressor train which had shaft instabilities and gear failures is examined. The field data verifies that the stability of centrifugal compressors can be adversely affected by coincidence of
Szenasi, F. R., Wachel, J. C.
core   +1 more source

Protonation‐Induced Electron Density Redistribution Facilitates Aggregation in PNNP Dicopper Hydride Complexes

Chemistry – A European Journal, EarlyView.
Copper(I) hydride complexes often exhibit diverse aggregation behavior that can profoundly influence their structure and reactivity. In this study we use a combined experimental and computational approach to identify key structural an electronic factors that govern aggregation in PNNP dicopperhydride complexes.
Roel Laurentius Maria Bienenmann, Chattawat Thangsrikeattigun, Alexandra Julia Schanz, Martin Lutz, Mu‐Hyun Baik, Daniël Laurens Johannes Broere   +5 more
wiley   +1 more source