Frequency-Domain Estimation of Linearized Oil-Film Coefficients
Frequency-Domain Estimation of Linearized Oil-Film Coefficients
复制标题
线性油膜系数的频域估计
DOI：
10.1115/1.3253182
复制
发表时间：
1982
期刊：
影响因子：
--
通讯作者：
M. Sahinkaya
中科院分区：
文献类型：
--
作者：
C. Burrows;M. Sahinkaya
一个频域算法估计线性油膜轴承系数的开发和评估控制条件下。它的能力，产生有意义的系数估计噪声数据进行检查，并提供了一个置信区间的估计。从模拟和实验数据得到的结果表明，该技术是更有效的比时域算法在早期的工作中描述的。挤压油膜轴承的实验估计和理论推导系数的比较表明，通过假设180度油膜获得的速度系数的封闭形式的表达式是有效的偏心率比以前证明的范围更广。
A frequency domain algorithm for estimating linearized oil-film bearing coefficients is developed and evaluated under controlled conditions. Its ability to produce meaningful coefficient estimates from noisy data is examined, and a confidence bound is provided for the estimates. Results obtained from both simulated and experimental data show that the technique is more efficient than the time-domain algorithm described in earlier work. A comparison of experimentally estimated and theoretically derived coefficients for a squeeze-film bearing suggests that closed-form expressions for the velocity coefficient obtained by assuming a 180 deg oil-film are valid for a wider range of eccentricity ratios than have been previously demonstrated.