Title :
Use of Inverse models built for accurate microstepping of linear switched reluctance step actuators
Author :
El Amraoui Ouni, L. ; Gillon, F. ; Brochet, P. ; Benrejeb, M.
Author_Institution :
LA. R. A. Automatique, Ecole Nationale d´´Ingenieurs de Tunis
Abstract :
A microstep control strategy, developed for linear switched reluctance step actuators, is proposed in this paper. The design of the studied actuator using finite element simulations has allowed to put, especially, in evidence the important dissymmetries observed on electromagnetic force characteristics developed by the different actuator phases. From this observation, an adapted control strategy, exploiting the obtained finite element results is used for punctual evaluation of the electromagnetic force. Hence, response surfaces of electromagnetic force according to plunger positions and phase supply currents are built and inversed in order to determine the supply current configurations required for accurate microstepping. Practical tests have validated the elaborated control strategy
Keywords :
actuators; adaptive control; control engineering computing; electromagnetic forces; finite element analysis; reluctance machines; response surface methodology; time-varying systems; adapted control; edge effects; electromagnetic force; finite element simulation; force response surface inversion; inverse models; linear switched reluctance step actuators; microstep control; microstepping; supply current configuration; Current supplies; Electromagnetic forces; Finite element methods; Hydraulic actuators; Inverse problems; Magnetic separation; Response surface methodology; Stators; Systems engineering and theory; Teeth; Finite Elements; edge effects; force response surface inversion; linear actuator; microstepping;
Conference_Titel :
Computational Engineering in Systems Applications, IMACS Multiconference on
Conference_Location :
Beijing
Print_ISBN :
7-302-13922-9
Electronic_ISBN :
7-900718-14-1
DOI :
10.1109/CESA.2006.4281690
