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

Actuators

Lică Flore¹  Marius Popa²  Mihaela Morega³  Alexandru-Mihail Morega³  Lucian Pîslaru-Dănescu⁴  Eros-Alexandru Pătroi⁵  Rareş-Andrei Chihaia⁶  Ionel Popescu⁷ 

[1] Defense Systems Department, National Research and Development Institute for Gas Turbines COMOTI, 061126 Bucharest, Romania;Electromechanical Systems and Technologies Department, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania;Faculty of Electrical Engineering, University POLITEHNICA of Bucharest, 060042 Bucharest, Romania;Laboratory of Sensors/Actuators and Energy Harvesting, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania;Magnetic Materials and Applications Department, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania;Renewable Sources and Energy Efficiency Department, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania;Research Department, Institute for Theoretical and Experimental Analysis of Aeronautical-Astronautics Structures, 061126 Bucharest, Romania;

关键词: linear magnetostrictive motor;    mathematical modeling;    numerical simulation;    pulse-width modulation;    activation coil;    magnetic bias coil;   

DOI  :  10.3390/act10100266

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown