New Type of Linear Magnetostrictive Motor Designed for Outer Space Applications, from Concept to End-Product

The use of the linear magnetostrictive motor (LMM) in outer space, in the absence of Earth’s gravitational field and where extreme temperatures manifest, involves innovative technical solutions that result in significant construction changes. This paper highlights these constructive changes and pres...

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Bibliographic Details
Published in:Actuators 2021-10, Vol.10 (10), p.266
Main Authors: Pîslaru-Dănescu, Lucian, Morega, Alexandru-Mihail, Chihaia, Rareş-Andrei, Popescu, Ionel, Morega, Mihaela, Flore, Lică, Popa, Marius, Pătroi, Eros-Alexandru
Format: Article
Language:English
Subjects:
activation coil
Alloys
Bias
Coils
Control equipment
Deformation
Design
Fuel injection
Gravitational fields
linear magnetostrictive motor
magnetic bias coil
Magnetic fields
Magnetism
Magnetostriction
mathematical modeling
Mathematical models
numerical simulation
Optimization
Permanent magnets
Power management
Power sources
Pulse duration modulation
pulse-width modulation
Rocket engines
Space applications
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Summary:The use of the linear magnetostrictive motor (LMM) in outer space, in the absence of Earth’s gravitational field and where extreme temperatures manifest, involves innovative technical solutions that result in significant construction changes. This paper highlights these constructive changes and presents the mathematical modeling followed by the numerical simulation of different operating regimes of LMM. The novelty of the design resides in using a bias coil instead, in addition to permanent magnets, to magnetize the magnetostrictive core and pulse width modulated (PWM) power sources to control the two coils of the LMM (bias and activation). The total absorbed current is less than 2 A, which results in the reduction of Joule losses. Moreover, a PWM source is provided to power and control a set of three Peltier elements aimed at cooling the device. The experiments validate the design of the LMM, which elicits it to power and control devices that may modulate fuel injection for rocket engines or for machines used to adjust positioning on circumterrestrial orbits.
ISSN:2076-0825
2076-0825
DOI:10.3390/act10100266