Results 11 to 20 of about 880,319 (258)

Structure Design and Magnetic Field Simulation of Non-contact Nutation Reduction Motor

open access: yesJixie chuandong, 2019
In order to solve the problem of weak stiffness of flexible wheels and more mechanical friction in existing robot harmonic reducer motors, a new type of nutation reducer motor is proposed by combining nutation deceleration motion with magnetic meshing ...
Xiaqi Shan   +3 more
doaj   +2 more sources

INTRODUCTION OF A WAVE FACE KINEMATIC REDUCER IN PUMPING TECHNOLOGIES FOR THE EXTRACTION OF HIGH-VISCOUS OIL IN EXTREME CONDITIONS

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2022
The relevance of the research is caused by the need of ensuring small overall dimensions and mass of gear speed reducers, which allows them to be placed together with piston pumps in hard-to-reach places and extreme conditions for the extraction of high ...
Mohamad A. Jasem, Peter Ya. Krauinsh
doaj   +1 more source

Stability of LevitronTM revisited [PDF]

open access: yesTheoretical and Applied Mechanics, 2017
This note discusses some issues related to stability of stationary motion of hovering magnetized top in a homogeneous magnetic field. Stability of synchronous motion is analyzed using the simplified model in which the hovering motion of the center of ...
Simić Srboljub
doaj   +1 more source

Wavefront Coherent Compensation Technology Under Direct Sunlight in Free Space Optical Communication System

open access: yesIEEE Photonics Journal, 2021
The charge-coupled device-based Shaker–Hartmann wavefront sensor has been widely used to compensate for wavefront distortion in coherent optical communication.
Xu Yan   +6 more
doaj   +1 more source

Design and Implementation of a Novel Passive Magnetically Levitated Nutation Blood Pump for the Ventricular-Assist Device

open access: yesIEEE Access, 2019
Considering the wear in mechanical bearings and the requirement for sensors or electrical power in active magnetic bearings, a novel nutation blood pump using a passive magnetic spherical bearing was developed in this paper.
Gang Chen   +4 more
doaj   +1 more source

Prograde and retrograde precession of a fluid-filled cylinder

open access: yesNew Journal of Physics, 2021
We numerically study precession driven flows in a cylindrical container whose nutation angle varies between 60 and 90 degrees for prograde and retrograde precession.
Federico Pizzi   +3 more
doaj   +1 more source

Stability of disk motion on the rheological ground

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
In this paper a new mathematical model of the disk motion on the basis of the Kelvin body is constructed. Taking the hypothesis of a point contact with the drive base, a system of differential equations of the disk motion is derived in the form of ...
I. N. Ignatov   +3 more
doaj   +3 more sources

DETERMINATION OF POLE AND ROTATION PERIOD OF NOT STABILIZED ARTIFICIAL SATELLITE BY USE OF MODEL

open access: yesOdessa Astronomical Publications, 2017
The algorithm of determination of orientation of rotation axis (pole) and rotation period of satellite, simulated by a cylinder, which is precessing around of vector of angular moment of pulse with constant nutation angle is offered. The Lambert's law of
S. Ya. Kolesnik   +2 more
doaj   +1 more source

Cone Algorithm of Spinning Vehicles under Dynamic Coning Environment

open access: yesInternational Journal of Aerospace Engineering, 2015
Due to the fact that attitude error of vehicles has an intense trend of divergence when vehicles undergo worsening coning environment, in this paper, the model of dynamic coning environment is derived firstly. Then, through investigation of the effect on
Shuang-biao Zhang   +2 more
doaj   +1 more source

On the forced oscillations in a precessing open cylindrical channel

open access: yesAIP Advances, 2021
In this paper, theoretical and experimental results of the forced oscillations in an open precessed cylindrical channel are reported. The theoretical part treats the problem using a linear inviscid irrotational approximation, where different inertial ...
H. E. Alshoufi
doaj   +1 more source

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