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Proceedings Paper

Design of the automatic motor Ke measurement system using the system on programming chip
Author(s): Sheng-Chan Yen; Kai-Hsiung Chang; Yen-Chih Liu; Nia-Chun An; Hsiu-An Tsai
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Paper Abstract

The induced electromotive force of traditional motor measurement usually uses another motor to connect the tested motor with the drive shaft to measure its speed and obtain Ke value of induced electromotive force of the tested motor. If the tested motor is not suitable for connection to the connect coupling because of the shape or volume of the rotor, it is difficult to measure the Ke values of the tested motor. So some scholars have proposed two-phase motor which drives the three-phase motor, and gain the measurement method of Ke from the third phase in a few years ago. The mainly way is using the digital logic circuits to redefine the truth table by entering the signals to the motor driver chip from the three Hall sensors. So it can still maintain a positive torque above 0 even if used the two-phase driver and the motor can be rotated by the two-phase driver. But the drawback is that it can only be measured the fixed Ke value at the same phase. And it has to redefine the truth table to measure the values of the other two phase. This paper provides a new measurement method that made the motor speed accelerate to the measured speed at the beginning and measuring the value of third phases while the rotation is maintained by the other two-phase. The advantage is that it can change the phase of measurement, so it can easily measure the Ke value. And the most of digital components which including processor, keyboard decoder and frequency counter etc can be achieved in FPGA by using SOPC method. It can significantly reduce the complexity of circuit and increase system reliability degree.

Paper Details

Date Published: 31 January 2013
PDF: 8 pages
Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 87594O (31 January 2013); doi: 10.1117/12.2018337
Show Author Affiliations
Sheng-Chan Yen, Metal Industries Research & Development Ctr. (Taiwan)
Kai-Hsiung Chang, National Formosa Univ. (Taiwan)
Yen-Chih Liu, Metal Industries Research & Development Ctr. (Taiwan)
Nia-Chun An, Metal Industries Research & Development Ctr. (Taiwan)
Hsiu-An Tsai, Metal Industries Research & Development Ctr. (Taiwan)

Published in SPIE Proceedings Vol. 8759:
Eighth International Symposium on Precision Engineering Measurement and Instrumentation
Jie Lin, Editor(s)

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