一种浮动瓦块流体润滑轴承刚度和阻尼系数的在线识别方法
By using an online method to identify the stiffness and damping coefficient of a floating pad fluid lubrication bearing, the problem of difficult parameter measurement during rotor rotation is solved. This method achieves online identification and parameter accuracy, supports wear detection and fault diagnosis, and is applicable to various types of floating pad fluid lubrication bearings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHEAST FORESTRY UNIV
- Filing Date
- 2025-05-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to test the stiffness and damping coefficient of fluid-lubricated bearings with floating bearing pads during rotor rotation online. Static tests under laboratory conditions cannot reflect changes in actual operating conditions, and the parameters may deviate from the true values.
An online identification method for the stiffness and damping coefficient of a floating pad fluid lubrication bearing is proposed. This method measures the rotor and pivot displacement by installing eddy current sensors and calculates the equivalent stiffness and damping coefficient using Fast Fourier Transform (FFT). It is applicable to the identification of dynamic parameters of floating pad fluid lubrication bearings.
It enables online identification of stiffness and damping coefficient during rotor operation, providing more accurate parameters that reflect actual operating conditions. It supports wear detection and fault diagnosis, is applicable to various types of floating bearing pad fluid lubrication bearings, and is low in cost and simple to calculate.
Smart Images
Figure CN120333831B_ABST