| English |
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| Title | Linear Systems Analysis of Cardiovascular System Expressed by an Equivalent Electrical Circuit Model. -stability, controllability, singular values and system optimization- |
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| Subtitle | |
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| Authors | Hirofumi Hirayama*, Yoshimitsu Okita** |
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| Authors(kana) | |
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| Organization | *Department of Public Health Asahikawa Medical College, **Department of Education Technology Natinal Institute of Special Education |
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| Journal | Circulation Control |
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| Volume | 20 |
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| Number | 2 |
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| Page | 163-169 |
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| Year/Month | 1999/ |
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| Article | Original article |
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| Publisher | Japan Society of Circulation Control |
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| Abstract | 「Abstract」Engineering linear systems analysis was applied for cardiovascular system to evaluate an entire systemic propenies of the system. The cardiovascular system was expressed by an equivalent electrical circuit comprised of systemic, pulmonary circulations including arterial and venous systems. Linear systems analysis disclosed that the cardiovascular system was stable but uncontrollable. The singular values elevated at low frequency range but was reduced significantly by optimized feed back that minimized the performance function involving the squares of deviations of the target pressures and consumption of control inputs. Present investigation must afford some insights to disclose the characteristic properties of cardiovascular system. |
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| Practice | Basic medicine |
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| Keywords | Cardiovascular system, Electrical circuit, Linear systems analysis, Optimization |
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