User manual

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 DocumentMT0100P.N

©XsensTechnologiesB.V. MTiandMTxUserManualandTechnicalDocumentation

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6.6 PhysicallocationofOrigin

TheMTiandMTxisprimarilyanorientationsensorandassuchitisnotimportantwhereitsinternaloriginis

situated, i.e. the orientation is the same for all positions of the MT as it can be considered a rigid body.

However,forapplicationswhereaccelerationsaremeasureditisimportanttoknowthetrueOriginoftheMT,

whichisdefinedbythephysicallocationoftheaccelerometer

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BelowyoucanfindthetranslationvectorbetweentheoriginOoftheMTandsomeconvenientexternalpoint

O’(ascrewhole)orO’’(theintersectionbetweenthesidesoftheMTi)ontheoutsideofthecasing.

6.6.1 MTi

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

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Keepinmindthattheaccelerometeritselfcannotbeconsideredtobe“pointaccelerometer”,i.e.ithasa

finitesize.Thismeans theexactphysical locationforthedifferent axesmaydeviatebythefinitesizeof the

accelerometer,whichisafewmillimetres.Thiseffectisneglectedhere.