OPTIMAL CONTROL OF THE TOTAL ARTIFICIAL HEART USING HALBACH ARRAY LINEAR MOTOR

Document Type : Original Article

Authors

Faculty of Engineering, Tanta University, Tanta, EGYPT

Abstract

The total artificial heart (TAH) is a mechanical device to be integrated with mammal‟s blood flow
dynamics to reinstate the functionality of biologically defected heart. In this paper, a Halbach array
linear synchronous motor (HALSM) is used as a TAH. In this paper, the optimal control of the TAH that
utilizes HALSM is studied to investigate its performance driving blood circulation. The optimal control
system is relied on enabling the TAH of following certain pattern of blood flow. Analytical formulas for
the HALSM developed force is presented depending on space harmonic analysis for the solution of the
multilayer boundary field problem. Parameters of the formulas are obtained by means of magnetic field
analysis using finite element method (FEM). The dynamic model of the blood circulation driven by
HALSM is developed as a main step before control system design. PID controller is designed to control
the TAH system. The genetic algorithm (GA) is used to obtain the optimized controller parameter
.Simulated study is carried out for the TAH optimal control as integrated element in the blood cycle of
an adult human. The obtained results, presents valuable guide for the design of TAH control system
implementing Halbach linear motors.

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