Open AccessAnalysis of the impact of changes in the stator magnetic circuit on static properties of the electromagnetic linear motor model
Author(s) -
Krzysztof Just,
Paweł Piskur
Publication year - 2018
Publication title -
biuletyn wojskowej akademii technicznej
Language(s) - English
Resource type - Journals
ISSN - 1234-5865
DOI - 10.5604/01.3001.0012.6593
Subject(s) - stator , magnet , magnetic reluctance , magnetic field , actuator , mechanics , work (physics) , finite element method , electromagnetic field , magnetic circuit , physics , control theory (sociology) , mechanical engineering , structural engineering , engineering , electrical engineering , computer science , control (management) , quantum mechanics , artificial intelligence
In this paper, the static characteristics as a function of changes in geometric dimensionsof the stator magnetic circuit of the linear stepper actuator with permanent magnets is presented.The stator is built from a series of cylindrical coils encapsulated with ferromagnetic case. The runneris made of permanent magnet rings connected with ferromagnetic spacers. The electromagneticinterac-tion between the stator and the runner for the sequential supply of coils was analyzed.The electro-magnetic force as a function of the geometry of the coils and the ferromagnetic housingfor the con-stant graduation of the runner was determined. The maximum, minimum, and averagevalues of the electromagnetic force as a function of the geometric independent variable were determined.The ratio of the mean force to the maximum, and mechanical work calculated as the integral of the forceon the path of the runner was adopted as the evaluation criteria. A comparison between the maximum,average and relative values of forces as a function of the geometric dimensions of the stator was made.Keywords: modelling and simulation, linear actuator, finite element method, field calculations, coggingforce, magnetic force.