Delphin ProfiMessage - 9.2.5.17 “Residual value”

ProfiMessage
Forasingleidealline(sinewave),thetotalvalueandeffect-
ivevaluematch.
9.2.5.17 “Residualvalue”
TheDSPdetermines(calculates)aweightedsumofallquadraticlinesofthefre-
quencyspectrum,excludingthethreeharmoniccomponentsand,whenapplic-
able,afreelydefinablecomponentofchoice.
Thischaracteristicvaluecanbedeterminedonlywhenacyclical
digitalpulseisconnectedtoadigitalinput/counter(e.g.thepulse
fromarotatingshaft).Thissignalprovidesthebasicfrequencyfn.

Acquisitionofanaccuratefnviathedigitalfrequencyinputisessen-
tial,asisthehighestpossibleresolutionforthefrequencyspectrum.
Intheeventofdeviationsbetweenthemeasuredfrequencyandfre-
quencyspectrum'slineindex,evaluationofthenextlinetakesplace.
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Delphin Technology AG
Dezember 2015
ProfiMessage Manual