Identification of dynamic characteristic parameters of joint surface on linear motor feed system considering rolling guide

doi:10.16731/j.cnki.1671-3133.2017.11.017

Abstract

Abstract: The joint surface of machine tools has an important influence on the dynamic and static characteristics of the whole machine.The identification of dynamic characteristic parameters of the joint surface is of great significance to improve the performance of the whole machine and shorten the development cycle.A method combining the LMS Test.Lab modal analysis and ANSYS response surface methodology was proposed to identify the dynamic characteristic parameters.The finite element model of linear motor feed system was established in ANSYS software based on the equivalent stiffness and damping value of joint surface,and the simulation modal analysis of the system was carried out.Modal experiment test was done by LMS Test.Lab.Comparison of simulated modal parameters and experimental modal parameters was done to modify the finite element model.In the end,the error of the experimental modal parameters and the simulated modal parameters is less than 8%,which verify the accuracy of the finite element model.

Key words: joint surface, dynamic characteristic, parameter identification, LMS Test.Lab software

CLC Number:

TH113.1

Zhang Liang, Fu Yucan, Yang Lu, Zhu Xinle. Identification of dynamic characteristic parameters of joint surface on linear motor feed system considering rolling guide[J]. Modern Manufacturing Engineering, 2017, 446(11): 93-99.

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