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KMID : 0372919910120030203
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Journal of Biomedical Engineering Research
1991 Volume.12 No. 3 p.203 ~ p.208
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Fuzzy Control Method for Balancing Left and Rrght Cardiac OutputS. in Total Artificial Heart
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Shin IS
Kim BY/Lee SH/Choi JW/Min BG
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Abstract
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Balancing left/right cardiac output is essential for the automatic control of total artificial hearts(TAH). A fuzzy logic-based control method is presented. We use left atrial pressure( LAP) ann right a’’’’rial pressure( RAP ) as indicators for left/right balancing. The fuzzy controller has four input variables which are measured LAP and RAP and their gradients. Desired variations in left cardiac output(LCO) and right cardiac output(RCO) are cal- culated to keep LAP and RAP within the Physiological limlts. Computer simulations were performed to adjust fuzzy membership functions for variables and verify this control method. Results from simulations showed that LAP and RAP returned to the physiological limits while AoP and PAP stayed within the physiological limits.
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