振動式混合装置における液中攪拌フィン減衰係数の推定

概要

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This paper describes about identification of damping coefficient of stir fin in liquid of vibrating mixer. We developed mixer of vibration type by using magnetically levitated fin. In device, mixing fin is levitated with the magnetic repulsive force in the mixer tank and excited from the outside by the magnetic field. The motion of the magnetically levitated fin has a very strong nonlinearity shows complex behavior. The damping coefficient is an important parameter to specify the motion of the magnetically levitated fin. In general, it is very difficult to estimate the damping coefficient of oscillator when damping is large. In this study, damping coefficient of stir fin of vibrating fin in water is identified by using phase method. The damping coefficient can be obtained by the experiment, and it was confirmed that damping coefficient is changed greatly depending on frequency.
宮崎大学の論文
2009-09-30