An optimal controller for an electric ventricular-assist device: Theory, implementation, and testing

Author

Klute, Glenn K. ; Tasch, Uri ; Geselowitz, David B.

Author_Institution

NASA Johnson Space Center, Houston, TX, USA

Volume

39

Issue

4

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

394

Lastpage

403

Abstract

The authors address 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% compared with the performance of the currently used feedforward control scheme.

Keywords

artificial organs; cardiology; controllers; Intel 8096 microprocessor; Penn State; closed-loop control law; electric ventricular-assist device; feedforward control scheme; optimal controller; power consumption; targeted patient population; Adaptive control; Batteries; Blood flow; Control systems; DC motors; Energy consumption; Heart; Optimal control; Pulse width modulation; Testing; Computers; Evaluation Studies as Topic; Feedback; Heart-Assist Devices; Humans; Microcomputers; Models, Theoretical; Software Validation; Therapy, Computer-Assisted;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.126612

Filename

126612