title: An optimal controller for an electric ventricular-assist device: theory, implementation, and testing.
abstract: 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.
authors.affiliation: NASA Johnson Space Center, Houston, TX 77058.
authors.forename: G K
authors.initials: GK
authors.lastname: Klute
authors.forename: U
authors.initials: U
authors.lastname: Tasch
authors.forename: D B
authors.initials: DB
authors.lastname: Geselowitz
mesh_terms: D003201:Computers / Q000592:standards; D005069:Evaluation Studies as Topic; D005246:Feedback; D006353:Heart-Assist Devices / Q000592:standards*; D006801:Humans; D008838:Microcomputers; D008962:Models, Theoretical; D012986:Software Validation; D013813:Therapy, Computer-Assisted / Q000592:standards*