OPTIMIZING DESIGN PARAMETERS OF A NOVEL PM TRANSVERSE FLUX LINEAR MOTOR

In permanent magnet (PM) linear motors, the maximal thrust and the minimal cogging force are the most important goals to pursue. Design parameters of a PM linear motor such as translator pole pitch, magnet pole pitch, tooth width of the core, and magnet dimension can affect the thrust and the cogging force. In this paper, the relevant design parameters of the proposed linear motor are adjusted for the optimized performance of the machine. In order to obtain the optimal design parameters for achieving larger thrust and less cogging force, Taguchi's method and grey system theory are adopted on the PM excited linear synchronous motor. From calculation of the signal-to-noise (S/N) ratio, the analysis of variance (ANOVA) and grey relational analysis, essential design parameters of the proposed linear motor can be found. These parameters are finally.examined by using a finite element method (FEM) for 2D linear motor model simulations to corroborate the optimization results.