Analysis on the Pitching Moment in Permanent-Magnet Linear Synchronous Motor for Linear Motion Stage Systems

• Published in: IEEE transactions on magnetics Vol. 52; no. 7; pp. 1 - 4
• Main Authors: Kyung-Hun Shin, Seung-Han Lee, Han-Wook Cho, Park, Cheol-Hoon, Jang-Young Choi, Gyungho Khim
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.07.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Analytical method; attraction force; Boundaries; Boundary conditions; Force; Iron; Magnetic fields; Magnetic flux; Magnetism; Mathematical analysis; Mathematical model; Permanent magnets; pitching moment; Pitching moments; PMLSM; Polar coordinates; Strategy; Stress; Synchronous motors; pitching moment; attraction force; permanent-magnet linear synchronous motor (PMLSM); Analytical method
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2016.2523999

This paper presents the characteristic analysis and experiment of pitching moment in a high-precision permanent-magnet linear synchronous motor. The pitching moment is analyzed according to suggested strategy; therefore, analytical solutions for magnetic fields generated by PMs are derived based on the analytical magnetic field calculation in terms of a 2-D polar coordinate system. The analytical solution of each subdomain (PM, air gap, slot, slot opening, and end region) is derived, and the field solution is obtained by applying the boundary and interface conditions between the subdomains. The magnetic force is determined based on the magnetic field analysis results. Finally, the predictions are compared with the measured data to confirm the validity of the analysis methods presented in this paper.