A Study on a LVAD of a Wear-free Heart Pump

This paper deals with hydrodynamic elements in a left ventricular assist device (LVAD) of a Wear-free Heart Pump, a rigid rotor with translational and slop motion suspended in an active magnetic bearing (AMB) system. First, the modeling of the dynamic behaviour of the rotor is pointed out. Then, the control strategy is developed. It is based on a suggested control method considering with the coupling effect from both ends of the rotor. The controller is executed on a DSP board. Simulation results and experiment results show the efficiency of the control strategy and validates the method applied to the pump.