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.
References
[1]
DiGiorgi, P.L.; Naka, Y.; Oz, M.C. Left Ventricular Assist Devices. Contemporary Cardiology: Surgical Management of Congestive Heart Failure; Springer Humana Press: Totawa, NJ, USA, 2005. Chapter 7; pp. 155–189.
[2]
Blitz, A.; Fang, J.C. Ventricular Assist Devices and Total Artificial Hearts. In Contemporary Cardiology: Device Therapy in Heart Failure; Springer Humana Press: Boston, MA, USA, 2009. Chapter 13; pp. 339–371.
[3]
Allen, G.S.; Murray, K.D; Olsen, D.B. The importance of pulsatile and non pulsatile flow in the design of blood pumps. Artif. Organs 1997, 21, 922–928, doi:10.1111/j.1525-1594.1997.tb00252.x.
[4]
Corda, J.; Skopljak, E. Linear Switched Reluctance Actuator. In Proceedings of 6th International Conference on Electrical Machines and Drives; Inspec/IEE: London, UK, 1993; pp. 535–539.
[5]
El Amraoui, L.; Gillon, F.; Vivier, S.; Brochet, P.; Benrejeb, M. Optimal Design Approach for Linear Tubular Machines. In Proceedings of IEEE International Conference on Systems Man and Cybernetics; IEEE: Danvers, MA, USA, 2002; Volume 5, pp. 1–6.
[6]
Yamada, H.; Hamajima, T.; Xiang, S.; Nishizawa, N. Six-phase linear pulse motor as linear oscillatory actuator. IEEE Trans. Mag. 1987, MAG-23, 2841–2843.
[7]
Llibre, J.F.; Martinez, N.; Nogarede, B.; Leprince, P. Linear Tubular Switched Reluctance Motor for heart assistance circulatory: Analytical and finite element modeling. In Proceedings of 10th International Workshop on Electronics, Control, Measurement and Signals (ECMS); IEEE: Danvers, MA, USA, 2011; pp. 1–6.
[8]
Llibre, J.F.; Martinez, N.; Leprince, P.; Nogarède, B. Innovative Linear Pulsatile Pump for heart assistance circulatory. In Proceedings of The Eighth International Symposium on Linear Drives for Industry Applications (LDIA 2011), Eindhoven, The Netherlands, 3–6 July 2011.
[9]
Lee, B.-S.; Bae, H.-K.; Vijayraghavan, P.; Krishnan, R. Design of a linear switched reluctance machine. IEEE Trans. Ind. Appl. 2000, 36, 1571–1580, doi:10.1109/28.887208.
[10]
Viorel, I.-A.; Hameyer, K.; Strete, L. Transverse flux tubular switched reluctance motor. In Proceedings of 11th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM'08; IEEE: Danvers, MA, USA, 2008; pp. 131–136.
[11]
Vasquez, H.; Parker, J.K. A new simplified mathematical model for a switched reluctance motor in a variable speed pumping application. Mechatronics 2004, 14, 1055–1068, doi:10.1016/j.mechatronics.2004.04.007.
[12]
Vasquez, H.; Parker, J.K.; Haskew, T. Control of a 6/4 switched reluctance motor in a variable speed pumping application. Mechatronics 2005, 15, 1061–1071, doi:10.1016/j.mechatronics.2005.06.003.
[13]
Krishnan, R. Switched Reluctance Motor Drives, Modeling, Simulation, Analysis, Design, and Applications; CRC Press LCC: Boca Raton, FL, USA, 2001; pp. 21–22.
[14]
Bae, H.-K.; Lee, B.-S.; Vijayraghavan, P.; Krishnan, R. A linear switched reluctance motor: converter and control. IEEE Trans. Ind. Appl. 2000, 36, 1351–1359, doi:10.1109/28.871284.
[15]
Lim, H.S.; Krishnan, R.; Lobo, N.S. Design and control of a linear propulsion system for an elevator using linear switched reluctance motor drives. IEEE Trans. Ind. Appl. 2008, 55, 534–542.
