Electromagnetic damper design using a multiphysics approach
Stabile, A, Aglietti, GS and Richardson, G (2015) Electromagnetic damper design using a multiphysics approach In: Conference on Active and Passive Smart Structures and Integrated Systems, 2015-03-09 - 2015-03-12, San Diego, CA.
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Electromagnetic dampers (EMD) have been widely studied and designed in the control of vibrating structures. Yet, their use for space applications has been almost negligible, due mainly to their high ratio of system mass over damping force produced. The development of shunted circuits, and in particular negative impedances, has allowed higher currents to flow in the device, thus obtaining an increased damping performance. However, the need for a thermal analysis has become crucial in order to evaluate the power and temperature limits of EMDs, and hence allow a more efficient optimization of the whole device. This paper presents a multiphysics Finite Element Analysis (FEA) of an EMD in which the thermal domain is integrated with the electromagnetic and mechanical domains. The influence of the temperature on the device parameters and overall performance in the operative temperature and frequency range of a space mission is shown. It follows a design optimization of an electromagnetic shunted damper for 5-kg SDOF to obtain a second-order filter. In particular, the analytical results are compared with the typical transfer function of a viscoelastic material. This paper demonstrates the feasibility to achieve the same slope of -40 dB/dec while considerably decreasing the magnitude of the characteristic resonance peak of viscoelastic materials. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
|Item Type:||Conference or Workshop Item (Conference Paper)|
|Subjects :||Surrey Space Centre|
|Divisions :||Faculty of Engineering and Physical Sciences > Electronic Engineering > Surrey Space Centre|
|Date :||1 January 2015|
|Identification Number :||https://doi.org/10.1117/12.2084031|
|Copyright Disclaimer :||Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.|
|Uncontrolled Keywords :||Science & Technology, Technology, Physical Sciences, Engineering, Electrical & Electronic, Materials Science, Multidisciplinary, Optics, Engineering, Materials Science, Electromagnetic damper, negative resistance, multiphysics finite element analysis, VIBRATION SUPPRESSION|
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|Additional Information :||Full text not available from this repository.|
|Depositing User :||Symplectic Elements|
|Date Deposited :||24 Aug 2016 08:10|
|Last Modified :||24 Aug 2016 08:10|
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