Analysis and Modeling of Linear-Switched Reluctance for Medical Application

Actuators

Jean-Francois Llibre³  Nicolas Martinez²  Pascal Leprince¹ 

[1] Cardiology Institute, Pitié-Salpêtrière Hospital, 47-83 Bd de l’Hôpital, 75651 Paris Cedex 13, France; E-Mail:;Novatem Simplified joint-stock company (SAS); ENSEEIHT, 27 rue d’Aubuisson F-31071 Toulouse cedex 7, France; E-Mail:;University of Toulouse, INPT, UPS; ENSEEIHT, 2 rue Charles Camichel, BP 7122, F-31071 Toulouse cedex 7, France; E-Mail:

关键词: switched reluctance;    modeling;    linear actuator;    position control;    medical application;   

DOI  :  10.3390/act2020027

来源: mdpi

【 摘 要 】

This paper focuses on the analysis, the modeling and the control of a linear-switched reluctance motor. The application under consideration is medical, and the actuator is to be used as a left ventricular assist device. The actuator has a cylindrical or tubular shape, with a mechanical unidirectional valve placed inside the mover, which provides a pulsatile flow of blood. The analytical expression of the effort based on the linear behavior of the actuator is given. The identification of the characteristics of the prototype actuator and the principle of position control is performed. A modeling of the actuator is proposed, taking into account the variation of inductance with respect to the position. The closed-loop position control of the actuator is performed by simulation. A controller with integral action and anticipatory action is implemented in order to compensate the effects of disturbing efforts and tracking deviations. Moreover, a magic switch is performed in the controller to avoid overshoots. The results show that the closed-loop response of the actuator is satisfactory.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.