Results 11 to 20 of about 5,901 (289)

Contact dynamics analysis of nutation drive with double circular-arc spiral bevel gear based on mathematical modeling and numerical simulation [PDF]

open access: yesMechanical Sciences, 2021
This paper describes a dynamic mathematical model of a new type two-stage nutation drive system with double circular-arc bevel gears. The dynamic displacement–vibration coupling model takes into account the gyro torque and side clearance of the nutating ...
Y. Su, L. Yao, J. Zhang
doaj   +1 more source

Parameter Self-Adjusting Single-Mode Fiber Nutation Coupling Algorithm Based on Fuzzy Control. [PDF]

open access: yesSensors (Basel)
The free-space optical communication fiber coupling system requires improved coupling efficiency through the fiber nutation algorithm. However, traditional fiber nutation algorithms suffer from issues such as fixed parameters and limited correction range.
Liu Y   +7 more
europepmc   +2 more sources

Dynamic modal analysis of double-sided meshing nutation drive with double circular arc spiral bevel gears [PDF]

open access: yesMechanical Sciences, 2020
In order to reduce the vibration of the double-sided meshing nutation drive with double circular arc spiral bevel gears, the dynamic modal of the nutation system is analyzed.
Z. Lin, Z. Lin, L. Yao, Z. Xie
doaj   +1 more source

INFLUENCE OF CONTROL CURRENT WAVEFORM ON ROTOR NUTATION OF THREE-DEGREES-OF-FREEDOM ELECTRIC MACHINE

open access: yesТехнічна електродинаміка, 2023
The design of the electric machine with three degrees of freedom of the rotor with an external magnetic core, containing permanent magnets, and an internal magnetic core is considered. The both magnetic cores are rotating.
І.С. Пєтухов   +3 more
doaj   +1 more source

Response of Schefflera actinophylla Plants Grown under Drought to Soil Compost Addition and Foliar Application of Melatonin [PDF]

open access: yesJournal of Plant Production, 2023
The provision of irrigation water has become crucial, especially for ornamental plants, due to Egypt's demanding water conditions. The use of inexpensive soil amendments i.e., compost and the application of a newly discovered molecule "melatonin" can ...
W. M. F. Abd–Elhady   +2 more
doaj   +1 more source

Experimental model for the description of the behaviour of a 9-mm projectile at a target

open access: yesForensic Sciences Research, 2021
Analysis of crime scenes involving single-fire-gun projectiles requires the determination of the direction of arrival of a projectile at the target and other factors to reconstruct events.
Patricia Morales-Vega   +3 more
doaj   +1 more source

Determination of Global Stability of the Slosh Motion in a Spacecraft via Num Erical Experiment [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2003
The global stability of the attitude motion of a spin-stabilized space vehicle is investigated by performing numerical experiment. In the previous study, a stationary solution and a particular resonant condition for a given model were found by using ...
Ja Young Kang
doaj   +1 more source

Mathematic Modelling and Numerical Analysis for a Novel Inner-Type Nutation Magnetic Drive

open access: yesEnergies, 2020
This paper presents an inner-type of magnetic gears for non-contact driving, based on the nutation gearing principle. An improved three-dimensional analytical model, based on the magnetic vector potential of rectangular permanent magnets, via the ...
Meiyan Lou, Ligang Yao
doaj   +1 more source

The Celestial Frame and the Weighting of the Celestial Pole Offsets in the Computation of VLBI-Based Corrections for the Main Lunisolar Nutation Terms

open access: yesSensors, 2021
Very long baseline interferometry (VLBI) is the only technique in space geodesy that can determine directly the celestial pole offsets (CPO). In this paper, we make use of the CPO derived from global VLBI solutions to estimate empirical corrections to ...
Víctor Puente, Marta Folgueira
doaj   +1 more source

Red Light and Glucose Enhance Cytokinin-Mediated Bud Initial Formation in Physcomitrium patens

open access: yesPlants, 2022
Growth and development of Physcomitrium patens is endogenously regulated by phytohormones such as auxin and cytokinin. Auxin induces the transition of chloronema to caulonema.
Durga Prasad Biswal   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy