Meetsystemen

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<strong>Meetsystemen</strong> Inhoudstafel DEEL I : Algemene principes 1 Algemene opbouw van een meetsysteem I.1 2 Karakteristieken van meetsysteemelementen I.3 3 Ladingseffecten in meetsystemen 3.1 Ladingseffecten in Thévenin-equivalent .......................................................... I.7 3.2 Ladingseffecten in Norton-equivalent ............................................................. I.9 3.3 Veralgemeende ladingseffecten .................................................................. I.10 4 Stoorsignalen, aarding en afscherming 4.1 Invloed van het stoorsignaal op de meetkring .................................................... I.13 4.2 Stoorbronnen .................................................................................... I.15 4.3 Koppelmechanismen ............................................................................ I.15 4.4 Aarding ......................................................................................... I.17 4.5 Methoden om stoorspanningen uit het meetsysteem te houden ................................... I.18 Fysische scheiding .............................................................................. I.18 Elektromagnetische afscherming - 'Twisted pairs' ............................................... I.18 (Elektrostatische) afscherming .................................................................. I.18 Gebalanceerde verbindingen .................................................................... I.21 CMRR bij verschilversterkers ................................................................... I.22 Filtertechnieken ................................................................................. I.23 Modulatie ....................................................................................... I.23 Uitmiddelen ..................................................................................... I.23 __________ - i - Johan Baeten
<strong>Meetsystemen</strong> Inhoudstafel DEEL II : Sensoren 5 Inleiding sensoren II.1 6 Binaire sensoren II.3 6.1. Mechanische naderingsschakelaar ............................................................... II.4 6.2. Inductieve naderingsschakelaars ................................................................ II.5 6.3. Overige naderingsschakelaars ................................................................... II.6 7 Resistieve sensoren 7.1. Inleiding ........................................................................................ II.7 7.2. Potentiometrische sensoren ..................................................................... II.7 7.3. Sinus-cosinus potentiometer .................................................................... II.9 7.4. Magnetische potentiometer .................................................................... II.11 7.5. Rekstrookjes ................................................................................... II.13 7.6. Weerstandsverandering - meetbruggen ......................................................... II.15 7.7. Gebruik van rekstrookje als elastische krachtsensor ............................................ II.17 8 Capacitieve opnemers 8.1. Inleidende principes ........................................................................... II.20 8.2. Capacitieve verplaatsingssensoren ............................................................. II.21 8.3. Cyclisch absolute fasegevoelige capacitieve verplaatsingsopnemer ............................. II.22 8.4. Capacitieve versnellingsopnemer .............................................................. II.23 8.5. Voorbeelden ................................................................................... II.24 8.6. Interfacing .................................................................................... II.25 9 Inductieve sensoren 9.1. Inleiding ....................................................................................... II.29 9.2. Hall-effectsensoren ............................................................................ II.30 9.3. Variabele reluctantie positie-opnemer .......................................................... II.32 9.4. Elektromagnetische snelheidssensor (tachogenerator) .......................................... II.34 9.5. Wervelstroom verplaatsingsopnemer ........................................................... II.36 9.6. De lineair variabele differentiaal-transformator (LVDT) ....................................... II.37 9.7. Roterend Veranderlijke Differentiaal-Transformator: RVDT ................................... II.42 9.8. Resolvers en Synchro's ......................................................................... II.43 9.9. Inductosyn ..................................................................................... II.50 9.10. Samenvatting eigenschappen ................................................................. II.51 __________ - ii - Johan Baeten
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Meetsystemen: Meetprincipes Chemisc
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Meetsystemen: Meetgrootheden Drukme
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Meetsystemen: Meetgrootheden Temper
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Meetsystemen: Meetgrootheden Niveau
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Tabel 3.7: Overzicht niveaumeting C
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Meetsystemen: Meetgrootheden Debiet
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Tabel 3.10: Overzicht debietmeters
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Meetsystemen: Signaalverwerking en
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Bibliografie 1. Handboek Procesauto
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Meetsystemen Formularium Formulariu
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Meetsystemen Formularium Overige: s
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Meetsystemen

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