This paper reviews the technical challenges and applications of feedback control systems in artificial hearts, particularly centrifugal pumps.
Answers are grounded in this paper and cite their sources.
Alerts clinicians to feedback control pitfalls in artificial heart pumps; leaves open rigorous validation before clinical use.
Artificial hearts are a commercially interesting technology which relies heavily on feedback control, particularly with centrifugal pump implementations using magnetic bearings. Several examples of feedback control in these pumps were explored in this paper, including parameter estimation for position sensing, observer based motor commutation, position control of the rigid impeller subjected to highly uncertain fluid dynamic forces, and pump discharge rate regulation (physiological control) to achieve uncertain objectives (due to insufficient experience) using difficult measurements on an extremely complex plant. Such problems are typical of an expanding range of biomedical applications for automatic control.
No takes yet. Share an insight, caveat, or question.
Maslen et al. (1998) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: