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Characterization of syringe-pump-driven versus pressure-driven microfluidic flows

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We compare the dynamic characteristics of syringe-pump-driven and pressure-driven microfluidic flows based on the experimental measurements of the step response of the inlet pressure pi. For syringe-pump-driven flows, periodic fluctuations of pi are observed experimentally, which are induced by the flow-rate fluctuations coming from the mechanical oscillations of the pump motor. For pressure-driven flows, it takes much less time for pi to become steady and no periodic fluctuations are observed. To reduce the deviation between the predicted and the measured pi, a closed-loop control system with feedback of pi is established for pressure-driven flows. Using a PI controller, the deviation can be eliminated, and meanwhile, high stability and accuracy of flow-rate supply can be achieved for pressure-driven flows.

Original languageEnglish
Title of host publicationProceedings of 2015 International Conference on Fluid Power and Mechatronics, FPM 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages711-715
Number of pages5
ISBN (Electronic)9781479987702
DOIs
StatePublished - 24 Nov 2015
Event7th International Conference on Fluid Power and Mechatronics, FPM 2015 - Harbin, China
Duration: 5 Aug 20157 Aug 2015

Publication series

NameProceedings of 2015 International Conference on Fluid Power and Mechatronics, FPM 2015

Conference

Conference7th International Conference on Fluid Power and Mechatronics, FPM 2015
Country/TerritoryChina
CityHarbin
Period5/08/157/08/15

Keywords

  • closed-loop control
  • dynamic characteristics
  • microfluidic systems
  • pressure-driven
  • syringe-pump-driven

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