Design and Analysis of a Double Layer Coils Linear Motor with Series Magnetic Circuit Structure using for Linear Dynamic Loading Platform

Linear voice coil motor (VCM) has the advantages of high precision and high dynamic response, which fulfills the requirements of linear dynamic loading platform. In this article, a high thrust double layer series magnetic circuit linear voice coil motor is analyzed and designed. Based on 2-D FEM, the thrust and thrust ripple are optimized. Moreover, the damping force on coil support plate is analyzed and reduced by optimization of material and structure. Finally, a linear VCM prototype is manufactured and tested, the thrust results have good consistency with FEM results.