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Fuzzy Control Concept for a Total Artificial Heart
Author(s) -
Kaufmann Ralf,
Becker Kurt,
Nix Christoph,
Reul Helmut,
Rau Günter
Publication year - 1995
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1995.tb02340.x
Subject(s) - fuzzy logic , control engineering , controller (irrigation) , fuzzy control system , computer science , artificial heart , centrifugal pump , control system , adaptation (eye) , control theory (sociology) , control (management) , artificial intelligence , engineering , mechanical engineering , medicine , agronomy , physics , electrical engineering , optics , impeller , cardiology , biology
The development of an electromechanically driven total artificial heart (Helmholtz‐TAH) was initiated in 1990. Anatomical fitting, biocompatibility, and automatic physiologic adaptation of pump output are the basic requirements that characterize the overall TAH concept. For evaluation of these features, a TAH labtype was developed. It provides most features of the conceptual artificial heart and supports in vitro testing of energy conversion, pump behavior, structural parts, sensors, and control concepts. A fuzzy controller has been implemented for adaptation of the pump rate to body perfusion demand by left pump chamber filling detection. This controller will be an important element of a future extensive TAH control system. The implementation is supported by a professional fuzzy control development tool that allows on‐line and real time optimization of control strategies for dynamic processes. The first experiments proved the feasibility and the advantages of this fuzzy control concept. The first in vitro test results are presented.