Title:
METHOD FOR DETERMINING BEARING FRICTION INDEX OF ECCENTRIC ROTOR AND METHOD FOR DETERMINING VARIABLE ROTATION INDEX OF ECCENTRIC ROTOR
Document Type and Number:
Japanese Patent JP2023063996
Kind Code:
A
Abstract:
To accurately obtain an inertia moment, a friction torque, a variable rotation index, and a bearing friction index.SOLUTION: In a method of measuring a bearing friction index value of the present invention, each value of a rotation angle θj+1[rad] and an average bearing friction index [-2(Tfm/I)][rad/s2] is obtained from the following formulas. ωm is considered as a value of average rotational angular velocity ωm[rad/s]. The measurement interval during J rotation of the eccentric rotor is divided into one or more, the average bearing friction index and average rotational angular velocity in the divided measurement section are calculated, and an approximation expression representing the relationship between the average bearing friction index and the average rotational angular velocity in each divided measurement section is obtained.SELECTED DRAWING: None
Inventors:
OZASA TOSHIHIRO
Application Number:
JP2021174165A
Publication Date:
May 10, 2023
Filing Date:
October 25, 2021
Export Citation:
Assignee:
SASAKURA CO LTD
International Classes:
G01M13/04
Attorney, Agent or Firm:
Patent Attorney Corporation Kyoto International Patent Office