Robust design of NMR magnet through worst case analysis

Ambrisi, Angelo; Formisano, A.; Martone, R.

doi:10.3233/jae-2011-1382

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Cited by 3 publications

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“…Typical examples are the coil systems used for the shimming of Magnetic Resonance Imaging apparatus (MRI) [1][2][3][4], or the magnets used for beam accelerators [5] or Thermonuclear Fusion Devices [6], while other examples are in [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Optmization of coils for field map synthesis

Chiariello¹,

Formisano²,

Martone³

2013

JAE

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Section: Introductionmentioning

confidence: 99%

Optmization of coils for field map synthesis

Chiariello¹,

Formisano²,

Martone³

2013

JAE

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“…The elastic suspension of the mass can be implemented by a cantilever [4,23], membrane [18], spring [20], flexible hinges [21] or magnetic levitation [24,27]. The discovery of the Nd-Fe-B permanent magnets, the strongest known magnets, led to the intensification of research for the improvement or development of various technical devices and systems, in applications such as, Nuclear Magnetic Resonance [30], muscle-like actuators [31] or moving-magnet type linear actuators [32,33].…”

Section: Introductionmentioning

confidence: 99%

Generator with levitated magnet for vibration energy harvesting

Olaru

Gherca

2011

JAE

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In this paper is presented an extensive theoretical study and some experimental results regarding an electromagnetic generator based on levitated magnet, designated to harvest energy from ambient vibrations. Generator optimization for achieving the maximum values of transmissibility and electrical power was performed by considering a resonance frequency different from the natural frequency that is usually used in literature. The step response of the system, described analytically, is useful in the analysis of generators subject to sudden variations of the random vibration amplitude. The obtained experimental results indicate the possibilities of optimization and increase of the device power depending on the frequency and amplitude of external vibrations. The generator with levitated magnet studied in this paper, provided a maximum power of 27 mW when working as a quasi-linear oscillator and of 64 mW, respectively, when working as a non-linear oscillator.

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