三线摆的振动状态分析

Analysis on the Vibrational State of Three-Wire Pendulum

本文从运动方程入手,对三线摆的扭动状态在理论上进行了分析。分析表明,三线摆一经启动虽然绕某一中心作往复运动,但在通常情况下它只是作复杂的非周期运动。只有当它的最大角位移足够时,三线摆的运动才具有谐振动的特征。

In this paper, proceeding from motion equation, the theoretical analysis on swing motion of three-wire pendulum is carried out. The analysis shows that the three-wire pendulum's starting to moving, althrough it around some axis makes a reciprocating, but usually a complex unperiodical motion. Only is its angular displacements small enough, the motion of three-wire pendulum just has the characters of harmonic vibration.