ANALYSIS OF A TWO-DIMENSIONAL PERMANENT-MAGNETIC PASSIVE DAMPER

Abstract

A linear model is presented by a simple form for a two-dimensional magnetic seesaw damper using permanent magnets, which was proposed by Murakami and Satoh. The magnetic system is simplified with an equivalent magnetic circuit from which the incremental magnetic flux is described by the displacement of the moving core. Since the magnetic reluctance of magnet cores varies with frequency, the expression is formulated in the frequency domain. A numerical analysis follows with the measurement of the incremental magnetic flux.