On the Design, Modeling, and Control of a Hybrid Pump System for Dynamic Pressurization of Explanted Mammalian Hearts

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Title: On the Design, Modeling, and Control of a Hybrid Pump System for Dynamic Pressurization of Explanted Mammalian Hearts
Author: Dugan, Sean Patrick-Michael
Advisors: Dr. Gregory D. Buckner, Committee Chair
Dr. Larry Silverberg, Committee Member
Dr. Denis R. Cormier, Committee Member
Dr. Andre P. Mazzoleni, Committee Member
Abstract: A hybrid electromechanical pump system is proposed to mimic left ventricular blood pressure in a living mammalian heart. The system consists of a gear pump and voice coil actuated diaphragm (VCAD) pump connected in parallel. By combining a high-capacity, low-bandwidth gear pump with a low-capacity, high-bandwidth VCAD pump, the advantages of both can be realized, resulting in an economical high-bandwidth pumping system that may be used with animal hearts of arbitrary size. Mathematical models are developed to describe the system dynamics and develop a digital controller. Experimental results are also presented.
Date: 2008-02-28
Degree: MS
Discipline: Mechanical Engineering
URI: http://www.lib.ncsu.edu/resolver/1840.16/519


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