Sensorless speed detection based on STFT of series-excited motor
Shi Jingzhuo, Xu Dianguo, Liu Baoting · 2004
This paper studies on the sensorless rotating speed detection methods for the single-phase AC series-excited (SACS) motor. The method to solve this problem based on STFT is worked out, and the experiments show that, the results with high precision can be obtained within 15 seconds. The comparison between the methods using STFT and wavelet is also given out. The comparison shows that the method using STFT is better than that using wavelet both in calculation time and precision.