Hello, how can i analyse a pwm signal?i want to show the duty cycle of the signal below.thxMike

Hallo Michi, bei mir funktioniert es mit der genannten Vorgehensweise auch mit deinem Datensatz. Dieses Script tut das gleiche (evtl. Kanalnamen anpassen): ChnEventList1 = ChnEventDetectionSlope( , "[1]/U_NWV_I\ES650\AD\Thermo:1", 5, "increasing", 1) Call ChnEventCreateFilteredTrueChn("/Rising", ChnEventList1, "[1]/time", NOVALUE) ChnEventList2 = ChnEventDetectionSlope( , "[1]/U_NWV_I\ES650\AD\Thermo:1", 5, "decreasing", 1) Call ChnEventCreateFilteredTrueChn("/Falling", ChnEventList2, "[1]/time", NOVALUE) Call ChnNovHandle("[1]/Rising","[1]/U_NWV_I\ES650\AD\Thermo:1","Delete","XY",1,1,0) Call ChnNovHandle("[1]/Falling","[1]/U_NWV_I\ES650\AD\Thermo:1","Delete","XY",1,1,0) Call ChnDeltaCalc("[1]/Rising","/Period") Call Calculate("Ch(""duty cycle"") = 1 - abs(Ch(""[1]/Rising"")-Ch(""[1]/Falling""))/Ch(""[1]/Period"")",NULL,NULL,"") Je nachdem ob du zuerst eine steigende oder fallende Flanke hast, musst du die eine oder die andere Formel nehmen (siehe vorherige Posts), damit eine positive Zeitdifferenz herauskommt. Gruß Christian

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pulse width modulation

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Re: pulse width modulation

Christian-P

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‎11-10-2016 06:14 AM

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Du kannst den "duty cycle" Kanal im 2D Achsensystem über die volle Länge darstellen, wenn du den "Rising" oder "Falling" Kanal als x Kanal verwendest und "duty cycle" als y-Kanal (siehe Screenshot im Anhang).

Gruß Christian

Christian
CLA, CTA, CLED

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