Title :
Artificial hearts
Author :
Maslen, Eric H. ; Bearnson, Gill B. ; Allaire, Paul E. ; Flack, Ronald D. ; Baloh, Michael ; Hilton, Edgar ; Noh, Myounggyu D. ; Olson, Don B. ; Khanwilkar, Pratap S. ; Long, James D.
Author_Institution :
Dept. of Mech., Aerosp. & Nucl. Eng., Virginia Univ., Charlottesville, VA, USA
Abstract :
Artificial hearts are a commercially interesting technology which relies heavily on feedback control, particularly with centrifugal pump implementations using magnetic bearings. Several of examples of feedback control in these pumps are 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
Keywords :
artificial organs; biocontrol; feedback; flow control; magnetic levitation; observers; parameter estimation; position control; pumps; artificial hearts; centrifugal pump; feedback control; magnetic bearings; observer; parameter estimation; physiological control; position control; pump discharge rate regulation; rigid impeller; Artificial heart; Commutation; Feedback control; Fluid dynamics; Force control; Impellers; Magnetic levitation; Parameter estimation; Position control; Pumps;
Conference_Titel :
Control Applications, 1997., Proceedings of the 1997 IEEE International Conference on
Conference_Location :
Hartford, CT
Print_ISBN :
0-7803-3876-6
DOI :
10.1109/CCA.1997.627539
