ABSTRACT
The Linear Variable-Reluctance Motor (LVRM) has the advantages of a simple, robust structure, with low manufacturing cost and a direct-driving mechanism, making it attractive in industrial applications and the main driving source for an increasingly large number of machine tools and semiconductor devices. In this paper, a novel Reciprocating Linear Variable-Reluctance Motor (RLVRM) is proposed. The magnetic poles and coils of the stator armature core are designed in pairs with a staggered pattern to generate a front and back-driving magnetic field, forming a VRM that reciprocates linearly along the central axis of the stator by the magnetic attraction of a salient pole reluctance mover. Such motor has the advantages of no lateral force and reduced friction loss, further achieving the characteristics of high mechanical strength, low mechanical loss, low noise, improved efficiency, and simple device structure to significantly save manufacturing cost. This paper provides an analysis of the equivalent circuit model, and discusses its linear model and dynamics. By using the linear model and dynamic characteristics of the LVRM, the parameters and their approximately equivalent circuits are obtained for the study of steady-state motor simulation.
