Title :
Current-based feed axis condition monitoring and fault diagnosis
Author :
Zhou, Yuqing ; Mei, Xuesong ; Zhang, Yun ; Jiang, Gedong ; Sun, Nuogang
Author_Institution :
Sch. of Mech. Eng., Xi´´an Jiaotong Univ., Xi´´an
Abstract :
A kind of numerical control machine tool feed axis condition monitoring system based on AC servo motor current is proposed. Firstly, the mathematical model between motor current and the fault is established. Then the test principle is profoundly investigated. And the frequency response between the disturbance torque from the fault and motor current is analyzed based on Matlab/SIMULINK. To obtain the motor current information, some different measured methods are suggested. In addition, the wavelet transform technology is proposed to detect the fault. The analysis results of the simulation and experiments show that it is feasible and reliable to use the motor current for monitoring the mechanical parts state, which puts basis for online feed axis condition monitoring and localizing the fault source rapidly.
Keywords :
AC motors; condition monitoring; fault diagnosis; machine control; machine tools; numerical control; servomotors; AC servo motor current; current-based condition monitoring; disturbance torque; fault detection; fault diagnosis; feed axis condition monitoring; frequency response; motor current information; numerical control machine tool; wavelet transform technology; AC motors; Computer numerical control; Condition monitoring; Fault diagnosis; Feeds; Machine tools; Mathematical model; Servomechanisms; Servomotors; Testing; Condition monitoring; Fault diagnosis; Feed axis; Motor current;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138390
