Open AccessNumerical Modeling of the Coupled Electromagnetic and Mechanical Phenomena of Linear Stepping Motors
Author(s) -
Mustapha Zaouia,
Nacereddine Benamrouche,
M. Rachek
Publication year - 2012
Publication title -
journal of electromagnetic analysis and applications
Language(s) - English
Resource type - Journals
eISSN - 1942-0749
pISSN - 1942-0730
DOI - 10.4236/jemaa.2012.41001
Subject(s) - maxwell stress tensor , finite element method , displacement (psychology) , magnetic flux , macro , maxwell's equations , physics , linear motor , mechanics , computer science , classical mechanics , control theory (sociology) , magnetic field , mechanical engineering , cauchy stress tensor , engineering , psychology , quantum mechanics , psychotherapist , thermodynamics , programming language , control (management) , artificial intelligence
In this paper, we propose an electromagnetic-mechanical model based on the finite element and Macro-Element (ME) technique to analyse and study the dynamic characteristics of a Tubular Linear Switched Reluctance Stepping Motor (LSRSM). After the resolution of the non-linear electromagnetic equation governing the behaviour of the different materials of the motor using the nodal-based finite element method, this equation is then coupled to the mechanical equation firstly through the magnetic force computed by Maxwell stress tensor, and secondly by the modified flux distribution due to the moving part. Because of the precision required in the mobile part displacement and the very small air gap of stepping motors, the simulation of the movement is assured by the Macro-Element (ME) technique compared to other movement techniques that present many disadvantages. The validity of the developed model is verified through the comparison of the computed displacement of the LSRSM moving part with those given experimentally [2]. The Results shows satisfactory agreement. The obtained dynamic characteristics, particularly the starting magnetic force, are obtained by considering two values of the supplying currents