Fast Variation of Gravitational Acceleration in Fluids Using Magnetic Levitation

2015 ◽  
Vol 27 (3) ◽  
pp. 221-229
Author(s):  
G. Gandikota ◽  
D. Beysens ◽  
D. Chatain ◽  
G. Pichavant ◽  
A. Mailfert
Keyword(s):  
Magnetic Levitation ◽  
Gravitational Acceleration ◽  
Fast Variation

Gravitational acceleration and deceleration of magnetic-levitation transport

2021 ◽  
Author(s):  
D. A. Karpukhin ◽  
A. O. Petrov ◽  
V. V. Koledov ◽  
D. A. Suslov ◽  
I. V. German
Keyword(s):  
Magnetic Levitation ◽  
Gravitational Acceleration ◽  
Acceleration And Deceleration

Design and implementation of an adaptive backstepping controller for a magnetic levitation system

2017 ◽  
Vol 40 (8) ◽  
pp. 2466-2475 ◽  
Author(s):  
Fatih Adıgüzel ◽  
Ersin Dokumacılar ◽  
Onur Akbatı ◽  
Türker Türker
Keyword(s):  
Magnetic Levitation ◽  
Tracking Error ◽  
Experimental Studies ◽  
Physical Parameters ◽  
Model Parameters ◽  
Gravitational Acceleration ◽  
Adaptive Backstepping ◽  
Backstepping Controller ◽  
Adaptation Rules ◽  
Adaptive Backstepping Controller

Dynamics of magnetic levitation systems contain high order nonlinearities and uncertainties on the physical parameters. Despite of these uncertainties and nonlinearities, the main purpose of this study is to drive the position tracking error of the ball to zero. In order to achieve this, an adaptive backstepping controller is designed. After deriving the error dynamics and designing the adaptive backstepping controller, adaptation rules are defined for the uncertain model parameters and the gravitational acceleration in the system model. Numerical simulations are performed for different working conditions to test the designed controller and the adaptation rules. In addition to this, the viability of the proposed controller is verified through experimental studies and satisfactory results are obtained.

The Scanning Electron Microscopic Observation of the Vestibular Sensory Epithelia

1969 ◽  
Vol 27 ◽  
pp. 40-41
Author(s):  
D.J. Lim ◽  
W.C. Lane
Keyword(s):  
Semicircular Canals ◽  
Electron Microscopic Observation ◽  
Gravitational Acceleration ◽  
Electron Microscopic ◽  
Sensory Epithelia ◽  
Scanning Electron Microscopic ◽  
Vestibular Sensory Epithelia ◽  
And Function ◽  
Sand Piles ◽  
Active Investigation

The morphology and function of the vestibular sensory organs has been extensively studied during the last decade with the advent of electron microscopy and electrophysiology. The opening of the space age also accelerated active investigation in this area, since this organ is responsible for the sensation of balance and of linear, angular and gravitational acceleration.The vestibular sense organs are formed by the saccule, utricle and three ampullae of the semicircular canals. The maculae (sacculi and utriculi) have otolithic membranes on the top of the sensory epithelia. The otolithic membrane is formed by a layer of thick gelatin and sand-piles of calcium carbonate crystals (Fig.l).

A Micro Conveyance Actuator based on Superconducting Magnetic Levitation

1999 ◽  
Vol 119 (8-9) ◽  
pp. 417-423 ◽  
Author(s):  
Iizuka Tetsuhiko ◽  
Fujita Hiroyuki
Keyword(s):  
Magnetic Levitation

Analysis of the effects of seismic interference on the measurement results of gravitational acceleration by ballistic laser gravimeters

2020 ◽  
Vol 0 (1) ◽  
pp. 51-61
Author(s):  
Олександр Іванович Вінніченко ◽  
Павло Іванович Неєжмаков ◽  
Анатолій Васильович Омельченко ◽  
Олексій Валерійович Федоров ◽  
Володимир Федорович Болюх
Keyword(s):  
Gravitational Acceleration ◽  
Measurement Results
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