Feedback Control Applications in Artificial Hearts
نویسندگان
چکیده
The introduction of centrifugal pumps as artificial heart devices has spawned a number of interesting controls problems including magnetic levitation and motoring of a thin, gyroscopic impeller subject to significant but poorly characterized fluid couplings; parameter estimation based observation of magnetic circuits to determine impeller position; and potentially complex coordination of impeller motor torque to physiological indicators in order to meet the body’s varying demands for blood flow. This application represents a small sample of the burgeoning field of biomedical control. Further, the solution directions exemplify a recent perspective in control theory: engineered impedances. Keywords— artificial heart, ventricular assist, magnetic bearing, self sensing, physiological control
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