|Table of Contents|

 Study on properties of armature current for micro DC motors and

multiple features of fault diagnosis

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[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2015年08
Page:
107-114
Research Field:
Publishing date:

Info

Title:
 Study on properties of armature current for micro DC motors and

multiple features of fault diagnosis

Author(s):
 XIE Zhi-ping12 WU Wei1 HONG Jian-feng1
 1. School of Physics and Mechanical & Electrical Engineering,Xiamen University,Xiamen 361005,China; 2. School of Mechanical & Electrical Engineering,Guizhou Normal University,Guiyang 550001,China
Keywords:
 micro direct-current motors fault diagnosis armature current multiple features spectrum a-

nalysis

PACS:
TP 307
DOI:
10. 15938 / j. emc. 2015. 08. 016
Abstract:
 A fault diagnostic model for the micro direct-current motor ( MDCM) was presented,which is used to solve the problem that MDCMs can’t be automatically inspected on the production line. The meth-od was based on multiple features of the armature current. The analytical expression for the armature cur-rent was obtained from the dynamic model of MDCM under no-load and steady-state operation conditions. The multiple features based on the armature current were confirmed. The experiments on several motors with the representative failures were studied. The time-frequency domain features of the current for the MDCM were analyzed. The fault mechanism were analyzed by using the multiple features mentioned a-bove. The experimental results show that the relative changes of the multiple features in different fault ca-ses are different and the multiple features can be utilized as the fault diagnostic indices.

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Last Update: 2016-03-07