Design of the automatic motor Ke measurement system using the system on programming chip

Sheng-Chan Yen; Kai-Hsiung Chang; Yen-Chih Liu; Nia-Chun An; Hsiu-An Tsai

doi:10.1117/12.2018337

31 January 2013 Design of the automatic motor Ke measurement system using the system on programming chip

Sheng-Chan Yen, Kai-Hsiung Chang, Yen-Chih Liu, Nia-Chun An, Hsiu-An Tsai

Proceedings Volume 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation; 87594O (2013) https://doi.org/10.1117/12.2018337
Event: International Symposium on Precision Engineering Measurement and Instrumentation 2012, 2012, Chengdu, China

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.

Citation Download Citation

Sheng-Chan Yen, Kai-Hsiung Chang, Yen-Chih Liu, Nia-Chun An, and Hsiu-An Tsai "Design of the automatic motor Ke measurement system using the system on programming chip", Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 87594O (31 January 2013); https://doi.org/10.1117/12.2018337

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KEYWORDS

Field effect transistors

Phase measurement

Bridges

Digital electronics

Field programmable gate arrays

Computer programming

Signal detection

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