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| A Detection Method of Motor Rotational Eccentricity Using Current Information |
| Liu Fei1, Liang Lin1, 2, Xu Guanghua1, 3, Dong Jiacheng1 |
1. Xi’an Jiaotong University Xi’an 710049 China;
2. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi’an Jiaotong University Xi’an 710049 China;
3. The State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong University Xi’an 710054 China |
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Abstract Aiming at detection of motor rotational eccentricity, a detection and identification method for motor rotational eccentricity based on the current and position information is introduced in this paper. The detection model of rotational eccentricity using current information is built, and the performance characteristics of motor rotational eccentricity in the stator current signal are studied. Meanwhile, the identification method of feature frequency for static eccentricity in current signal is also analyzed. Then, this method proposed that combination of current and position information to detect the motor dynamic rotation eccentricity. Through experiments and application, it is shown that using current information and dynamic axis orbit can be an effective detection and estimation means for the status of motor rotation eccentricity, and these also proved the effectiveness of monitoring and diagnostics for motor rotation eccentric with the stator current signal.
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Received: 13 September 2013
Published: 05 August 2014
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2014, Vol. 29 
