Thrust Ripple Reduction in Permanent Magnet Synchronous Linear Motor Based on Electromagnetic Damping-Spring System

This paper proposes an electromagnetic damping-spring system (ED-SS) to reduce the thrust ripple of permanent magnet synchronous linear motor (PMSLM), which is applied to the laser cutting machine. This approach uses restraining force of ED-SS that offsets the ripple force to decrease the thrust ripple. First, the ED-SS is designed with the structure and motion characteristics of PMSLM. The equiva...