Comparison of real-time control strategies with hysteresis compensation for magnetostrictive actuators

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Davino, Daniele^{a; *} | Giustiniani, Alessandro^b | Iannelli, Luigi^a | Visone, Ciro^a

Affiliations: [a] Engineering Department, University of Sannio, Benevento, Italy | [b] {DIEII, University of Salerno, Fisciano (SA), Italy}

Correspondence: [*] Corresponding author: Daniele Davino, Engineering Department, University of Sannio, 82100 Benevento, Italy. Tel.: +39 0824 30 5579; Fax: +39 0824 325246; E-mail: davino@unisannio.it

Abstract: Magnetostrictive actuators are employed for several purposes but, often, the control strategy is strongly affected by their hysteretic behavior. Such issue becomes crucial if dynamic mechanical stress conditions apply. Indeed, the stress must be considered as an additional input. Nevertheless, a compensation scheme with two-input variables can be defined and fruitfully utilized in a suitable invertibility region. In this paper, different control strategies, based on a compensation algorithm able to take into account the applied mechanical stress, are proposed and compared with simpler linear controllers in a real-time setup. Experimental data measured over a magnetostrictive actuator are presented and commented.

Keywords: Magnetostriction, magnetostrictive devices, control systems, hysteresis, real-time experiments

DOI: 10.3233/JAE-2012-1506

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 529-534, 2012