Monitoring of drill fracture from the current measurement of a three-phase induction motor

被引：11
|
作者：
Liu, HS
Lee, BY
Tarng, YS
机构：
[1] Dept. of Mech. Manufacture Eng., Natl. Yunlin Polytechnic Institute, Yunlin
[2] Department of Mechanical Engineering, Natl. Taiwan Institute of Technology, Taipei
来源：
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 1996年 / 36卷 / 06期
关键词：
Electric current measurement - Equivalent circuits - Fracture - Induction motors - Schematic diagrams;
D O I：
10.1016/0890-6955(95)00052-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The use of three-phase induction motor current to detect tool fracture in drilling operations is presented in this paper. The basic principles of three-phase induction motors are briefly described and then an equivalent circuit diagram of induction motors is given. Based on the equivalent circuit diagram, the square stator current of induction motors is approximately proportional to the electromagnetic torque developed by the motor. Since the occurrence of tool fracture will cause the variations in the motor torque, measurement of the stator current appears to be an indirect technique for sensing tool fracture. Experimental results have shown that drill fracture can be clearly recognized from the stator current of a three-phase induction spindle motor system. Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码：729 / 738
页数：10
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