%0 Journal Article
	%A Mohsen A. Bakouri and  Andrey V. Savkin and  Abdul-Hakeem H. Alomari and  Robert F. Salamonsen and  Einly Lim and  Nigel H. Lovell
	%D 2012
	%J International Journal of Biomedical and Biological Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 71, 2012
	%T A Sensorless Robust Tracking Control of an Implantable Rotary Blood Pump for Heart Failure Patients
	%U https://publications.waset.org/pdf/5457
	%V 71
	%X Physiological control of a left ventricle assist device (LVAD) is generally a complicated task due to diverse operating environments and patient variability. In this work, a tracking control algorithm based on sliding mode and feed forward control for a class of discrete-time single input single output (SISO) nonlinear uncertain systems is presented. The controller was developed to track the reference trajectory to a set operating point without inducing suction in the ventricle. The controller regulates the estimated mean pulsatile flow Qp and mean pulsatility index of pump rotational speed PIω that was generated from a model of the assist device. We recall the principle of the sliding mode control theory then we combine the feed-forward control design with the sliding mode control technique to follow the reference trajectory. The uncertainty is replaced by its upper and lower boundary. The controller was tested in a computer simulation covering two scenarios (preload and ventricular contractility). The simulation results prove the effectiveness and the robustness of the proposed controller

	%P 575 - 579