Experimental and Characteristic Analysis of Tubular Type Linear Oscillating Actuator with Halabch Magnetized PMs Mover

Halbach배열 영구자석 가동자로 구성된 Tubular형 직선 왕복 액추에이터의 특성해석 및 실험

In the machine tool industry, direct drive linear motor technology is of increasing interest as a means to achieve high acceleration, and to increase reliability. This paper deals with the characteristics of tubular type linear oscillating actuator with Halbach magnet array. The magnetic field solutions are derived analytically in terms of vector potential, two dimensional cylindrical coordinate system and Maxwell's equations. Motor thrust, flux linkage, back emf are then derived. The results are shown in good conformity with those obtained from the commonly used finite element method. Test results such as thrust measurements are also given to confirm the analysis.