Analysis of No-Load Normal Vibration in Single-Sided Permanent Magnet Synchronous Linear Motors With Different End Structures

This paper investigates the no-load normal vibrations of single-sided permanent magnet synchronous linear motors (S-PMSLMs) with different end structures, addressing a significant gap in the current literature. By employing the Maxwell stress tensor method, analyzes the harmonic orders and frequencies of the no-load normal force density are analyzed. Comparative research between the comb-type auxiliary tooth (CTAT) and conventional auxiliary tooth (C-AT) structures indicates that while the CTAT marginally increases the amplitude of the no-load normal force density, it significantly reduces harmonic amplitudes and vibration levels. The theoretical and simulation analyses are validated through no-load vibration experiments, providing valuable insights for the design optimization of S-PMSLMs, particularly beneficial for high-speed transportation systems that require high precision and reliability.