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A Xylophone Bar Magnetometer for micro/pico satellites

dc.contributor.authorLamy, H.
dc.contributor.authorRochus, V.
dc.contributor.authorNiyonzima, I.
dc.contributor.authorRochus, P.
dc.date2009
dc.date.accessioned2016-04-05T10:30:18Z
dc.date.available2016-04-05T10:30:18Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/3241
dc.descriptionThe Belgian Institute of Space Aeronomy (BIRA-IASB), "Centre Spatial de Liège" (CSL), "Laboratoire de Techniques Aéronautiques et Spatiales" (LTAS) of University of Liège, and the Microwave Laboratory of University of Louvain-La-Neuve (UCL) are collaborating in order to develop a miniature version of a xylophone bar magnetometer (XBM) using Microelectromechanical Systems (MEMS) technology. The device is based on a classical resonating xylophone bar. A sinusoidal current is supplied to the bar oscillating at the fundamental transverse resonant mode of the bar. When an external magnetic field is present, the resulting Lorentz force causes the bar to vibrate at its fundamental frequency with an amplitude directly proportional to the vertical component of the ambient magnetic field. In this paper we illustrate the working principles of the XBM and the challenges to reach the required sensitivity in space applications (measuring magnetic fields with an accuracy of approximately of 0.1 nT). The optimal dimensions of the MEMS XBM are discussed as well as the constraints on the current flowing through the bar. Analytical calculations as well as simulations with finite element methods have been used. Prototypes have been built in the Microwave Laboratory using Silicon on Insulator (SOI) and bulk micromachining processes. Several methods to accurately measure the displacement of the bar are proposed.
dc.languageeng
dc.titleA Xylophone Bar Magnetometer for micro/pico satellites
dc.typeConference
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeAnalytical calculation
dc.subject.freeBulk- micromachining
dc.subject.freeCurrent flowing
dc.subject.freeExternal magnetic field
dc.subject.freeFundamental frequencies
dc.subject.freeMicroelectromechanical-systems technologies
dc.subject.freeMiniature version
dc.subject.freeResonant mode
dc.subject.freeSilicon-on-insulators
dc.subject.freeSinusoidal currents
dc.subject.freeVertical component
dc.subject.freeWorking principles
dc.subject.freeFinite element method
dc.subject.freeLorentz force
dc.subject.freeMagnetic field effects
dc.subject.freeMagnetic materials
dc.subject.freeMagnetometers
dc.subject.freeMEMS
dc.subject.freeMicroelectromechanical devices
dc.subject.freeMicromachining
dc.subject.freeSpace applications
dc.subject.freeComposite micromechanics
dc.source.title60th International Astronautical Congress (IAC), 12-16 October 2009, Daejeon, Republic of South Korea
dc.source.volume7
dc.source.page5853-5864
Orfeo.peerreviewedNo
dc.identifier.scopus2-s2.0-77953568329


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