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

Actuators ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 266
Author(s):  
Lucian Pîslaru-Dănescu ◽  
Alexandru-Mihail Morega ◽  
Rareş-Andrei Chihaia ◽  
Ionel Popescu ◽  
Mihaela Morega ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
Fuel Injection ◽  
Outer Space ◽  
Rocket Engines ◽  
Space Applications ◽  
Power Sources ◽  
Pulse Width Modulated ◽  
Power And Control ◽  
Technical Solutions ◽  
And Control

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.

scholarly journals AUTONOMY OF ELECTRICAL SYSTEMS. TECHNICAL SOLUTIONS BASED ON STORAGE OF ELECTRIC ENERGY

2018 ◽  
Vol 18 (1) ◽  
pp. 55-58
Author(s):  
Nicolae Vasile ◽  
Bogdan Tene ◽  
Andrei Nedelschi ◽  
Nicolae Fidel ◽  
Ionuţ Craiu
Keyword(s):  
Smart Grid ◽  
Electric Energy ◽  
Electronic System ◽  
Smart Building ◽  
Electrical Systems ◽  
Technological Advances ◽  
Power And Control ◽  
Will Power ◽  
Technical Solutions ◽  
And Control

Abstract The paper deals with the concept of autonomy of electrical systems, which is becoming more and more present, in the context in which the electric-non-electric relation existing on the market is constantly changing in favor of electricity. The factors influencing this trend come from imposing the principles of Sustainable Development, the exhaustiveness of fossil forms of energy, technological advances in the electrical and electronic components industry and their connection with computers. Evolution of Smart Grid, Smart Grid, Smart City, Smart Building, Smart Transport, etc. provides a global electronic system that will power and control most of the economic activity.

Power and control: transferring energy when there is work to be done

2005 ◽  
pp. 29-30
Author(s):  
Naveen Sharma ◽  
William Stanley
Keyword(s):  
Power And Control ◽  
And Control

International Human Rights Law and Blockade

2018 ◽  
Author(s):  
Phillip Drew
Keyword(s):  
Human Rights ◽  
International Human Rights Law ◽  
Humanitarian Law ◽  
Human Rights Law ◽  
International Human Rights ◽  
European Court ◽  
Power And Control ◽  
International Human ◽  
Extraterritorial Jurisdiction ◽  
And Control

The years since the beginning of the twenty-first century have seen a significant incursion of international human rights law into the domain that had previously been the within the exclusive purview of international humanitarian law. The expansion of extraterritorial jurisdiction, particularly by the European Court of Human Rights, means that for many states, the exercise of physical power and control over an individual outside their territory may engage the jurisdiction of human rights obligations. Understanding the expansive tendencies of certain human rights tribunals, and the apparent disdain they have for any ambiguity respecting human rights, it is offered that the uncertain nature of the law surrounding humanitarian relief during blockades could leave blockading forces vulnerable to legal challenge under human rights legislation, particularly in cases in which starvation occurs as a result of a blockade.

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