A study selection to minimize the vibration of LPM considering magnetic characteristics

This paper presents the selection method of the input current waveforms for minimizing the vibration of linear pulse motor (LPM). We have developed and tested a prototype 2-phase 4-poles LPM with the permanent magnet and its control driver. To obtain the thrust curve performance of LPM, the permeance curve at the air gap and the thrust is calculated and estimated by the analytical method on the base of the magnetic equivalent circuit and the finite element method. And, the thrust characteristics at the static operation state are analyzed and experimented with the respect to the input wave forms such as the rectangular, triangular micro-step and sine micro-step wave form to investigate the vibration effects of LPM.