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Identification of rotor bearing parameter using orbit data

机译:使用轨道数据识别转子轴承参数

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摘要

This paper presents the identification of rotor support dynamic parameters. The final dynamical system equation using the Lagrange method is underdetermined; therefore, another set of equations is derived using same system equation with different rotating speed. Combining these two equation sets, an overdetermined algebraic equation is obtained, and the solution of the system equation can be obtained using the least squares method. The sensitivity analysis is performed to extract the optimized solution, which is considered to be insensitive to inherent measurement errors. The trigonometric terms of experimentally obtained orbit shapes can be utilized for analysis at varying rotor speeds after discussing the possibility of the proposed method. The accuracy of the proposed method is compared with estimated simulation parameters, and experimental results for the rotor rig are compared with previous known data.
机译:本文提出了转子支架动态参数的辨识。使用拉格朗日方法的最终动力学系统方程是不确定的。因此,使用转速不同的相同系统方程式可以推导另一组方程式。结合这两个方程组,可以得到一个超定的代数方程,并且可以使用最小二乘法获得系统方程的解。执行灵敏度分析以提取优化的解决方案,该解决方案被认为对固有的测量误差不敏感。在讨论了所提出的方法的可能性之后,可以将实验获得的轨道形状的三角学项用于在变化的转子速度下进行分析。将该方法的准确性与估计的仿真参数进行比较,并将转子钻机的实验结果与以前的已知数据进行比较。

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