矢谱分析技术在转子系统振动分析中的应用

Application of Vector Spectrum in Vibration Analysis of Rotor Systems

针对矢谱分析技术在转子振动分析应用中的不足,从转子系统动力学角度,在仅考虑圆盘运动的情况下,推导出了矢谱参数与系统动力学参数之间的关系式,从理论上证明了在转速恒定的前提下,振矢角及振矢比仅与系统的刚度系数和阻尼系数有关,该研究结果为应用矢谱分析技术进行转子系统振动分析以及系统参数辨识提供了一定的理论依据.

From the view of rotor dynamics, when the motion of the disk is only considered, the relations between parameters of vector spectrum and of rotor dynamics＇ are derived. It is proved that the vibration vector angular and ratio of the main vibration vector and second vibration vector are only related to stiffness coefficients and damping coefficients of the rotor system when the rotating speed is constant. The study presents the foundation for vector spectrum technology in vibration analysis and parameter identification of rotor systems.