ピストン形空気圧バイブレータの非線形特性解析

概要

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Piston-type pneumatic vibrator is a device for generating mechanical oscillations by only pneumatic energy. This vibrator is used in parts feeder etc., because it has advantages of simple structure and high power. When applying a vibrator to the system, required frequency and amplitude must be realized. However the behavior of the vibrator is not formulated, so it is the difficult to decide the dimensions of vibrator for given conditions. The purpose of this study is to clarify the characteristics of the piston-type vibrator by modeling the nonlinear dynamics and by analyzing its lineralized model utilizing Fourier Series development. Consequently it is found that this phenomenon is a self-excited oscillation caused by the relay element. Equations relating frequency and amplitude to load mass, cylinder diameter and so on, are obtained. The calculated results from the model or its derived equations are in good agreement with experiments and are effective for the design of vibrator.
2000-12-25