Browsing by Author "Dr. Denis R. Cormier, Committee Member"

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    On the Design, Modeling, and Control of a Hybrid Pump System for Dynamic Pressurization of Explanted Mammalian Hearts
    (2008-02-28) Dugan, Sean Patrick-Michael; Dr. Gregory D. Buckner, Committee Chair; Dr. Larry Silverberg, Committee Member; Dr. Denis R. Cormier, Committee Member; Dr. Andre P. Mazzoleni, Committee Member
    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.