A microcomputer based system is described that controls the operation of a dual chamber, diaphragm-type pneumatic blood pump in both open-loop and closed-loop modes. The open-loop mode of operation allows selection of pumping rate and systolic time parameters. The closed-loop mode of operation allows selection of pumping rate and pump output parameters, with the systolic time parameter adjusted automatically to maintain a selected pump output in spite of load changes. Digital display of all pump operating parameters is provided.
A description of the device and the control techniques employed, the interface circuitry and software algorithm developed, a calibration and tuning procedure, and closed-loop response curves are included. / Master of Science
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/74631 |
| Date | January 1978 |
| Creators | Hux, Douglas Eugene |
| Contributors | Mechanical Engineering |
| Publisher | Virginia Polytechnic Institute and State University |
| Source Sets | Virginia Tech Theses and Dissertation |
| Language | English |
| Detected Language | English |
| Type | Thesis, Text |
| Format | vii, 144 leaves, application/pdf, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
| Relation | OCLC# 39901024 |
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