An optimal position feedback controller improves the efficiency of the Penn State electric ventricular-assist device by 15-21% in vitro.
In vitro efficiency gains do not support clinical adoption; leaves open in vivo validation of position feedback control for EVADs.
This paper addresses the development and testing of an optimal position feedback controller for the Penn State electric ventricular-assist device (EVAD). The control law is designed to minimize the expected value of the EVAD's power consumption for a targeted patient population. The closed-loop control law is implemented on an Intel 8096 microprocessor and in vitro test runs show that this controller improves the EVAD's efficiency by 15-21%, when compared with the performance of the currently used feedforward control scheme.
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Klute et al. (1992) studied this question.
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