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Test platform for pump controller - Platform development
KTH, School of Electrical Engineering (EES), Automatic Control.
2005 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

I detta exjobb har en testplattform skapats för att kunna testa, utvärdera och jämföra olika pumpstyrningar i torr miljö. Testplattformen består av en simulerad pumpstation till vilken befintliga pumpstyrningar av valfri modell kan kopplas, det vill säga ett Hardware-In-the-Loop-system. De främsta fördelarna med en sådan plattform är flexibilitet, snabb feedback samt möjligheten att återskapa exakt samma förutsättningar för olika pumpstyrningar.

Testplattformen har implementerats i LabVIEW på en PC som kommunicerar med pumpstyrningshårdvara via ett I/O-kort för analoga och digitala signaler.

Det simulerade systemet konfigureras genom val av bland annat pumpar, pumpsump, inflöde och rörsystem. Utifrån de inmatade värdena och styrsignaler från pumpstyrningen simuleras sedan bland annat systemets flöden, energier och temperaturer. Nivån i sumpen, och övriga insignaler till pumpstyrningen, återkopplas från simuleringen. Det finns även möjlighet att påverka systemet genom att applicera exempelvis ett pumphaveri eller en igensättning.

Testplattformen har testkörts mot tre olika pumpstyrningshårdvaror. Testkörningarna visar att både simuleringsmodellerna och kommunikationen med styrningen via I/O-kortet fungerar. Konceptet med att testa en pumpstyrningshårdvara mot en mjukvarusimulering är ett snabbt, enkelt och kostnadseffektivt tillvägagångssätt.

Abstract [en]

In this master thesis a test platform was created to be able to test, evaluate and compare different pump controllers in a dry environment. The platform consists of a simulated pump station to which optional pump controllers can be connected, i.e. a Hardware-In-The-Loop system. The largest benefits from such a platform are flexibility, rapid feedback along with the possibility to recreate the exact same conditions for different pump controllers.

The test platform was implemented in LabVIEW on a PC that communicated with the pump control hardware through an I/O-card for analog and digital signals.

The system is configured by setting parameters for pumps, sump, inflow, pipe system etc. The flows, energies and temperatures are simulated based on the input values and the control signals from the pump controller. The sump level and other signals needed by the controller are fed back from the simulation. There is also the possibility to affect the system by applying for example a pump failure or a clogging.

Three different test runs with different pump controllers were performed. The test runs indicate that both the simulation models and the I/O-communication work. The concept of testing pump control hardware against a software simulation is a rapid, simple and cost efficient procedure.

Place, publisher, year, edition, pages
2005. , 57 p.
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-107534OAI: oai:DiVA.org:kth-107534DiVA: diva2:576421
Subject / course
Automatic Control
Educational program
Master of Science in Engineering
Uppsok
Technology
Examiners
Available from: 2012-12-13 Created: 2012-12-12 Last updated: 2012-12-13Bibliographically approved

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