Abstract
In general, patient variability and diverse environmental operation makes physiological control of a left ventricular assist device (LVAD) a complex and complicated problem. In this work, we implement a Starling-like controller which adjusts mean pump flow using pump flow pulsatility as the feedback parameter. The linear relationship between mean pump flow and pump flow pulsatility forms the desired flow of the Starling-like controller. A tracking control algorithm based on sliding mode control (SMC) has been implemented. The controller regulates the estimated mean pulsatile flow (Qp) and flow pulsatility (PIQp) generated from a model of the assist device. A lumped parameter model of the cardiovascular system (CVS) was used to test the control strategy. The immediate response of the controller was evaluated by inducing a fall in left ventricle (LV) preload following a reduction in circulating blood volume. The simulation supports the speed and robustness of the proposed strategy.
| Original language | English |
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| Title of host publication | Engineering in Medicine and Biology Society (EMBC) |
| Subtitle of host publication | 2013 35th Annual International Conference of the IEEE |
| Place of Publication | Piscataway, NJ, USA |
| Publisher | IEEE, Institute of Electrical and Electronics Engineers |
| Pages | 675-678 |
| Number of pages | 4 |
| Volume | 2013 |
| ISBN (Electronic) | 9781457702167 |
| DOIs | |
| Publication status | Published - 2013 |
| Event | International Conference of the IEEE Engineering in Medicine and Biology Society 2013 - Osaka International Convention Center, Osaka, Japan Duration: 3 Jul 2013 → 7 Jul 2013 Conference number: 35th |
Conference
| Conference | International Conference of the IEEE Engineering in Medicine and Biology Society 2013 |
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| Abbreviated title | EMBC 2013 |
| Country | Japan |
| City | Osaka |
| Period | 3/07/13 → 7/07/13 |