一种估计无刷直流电机旋转相位的新方法及其在变速轴承故障诊断中的应用

A new methodology is proposed to estimate the rotating phase of a brushless direct current (BLDC) motor under variable-speed condition through phase current analysis. Studies on this topic are limited. By adopting several signal processing techniques, including zero-phase filtering, Hilbert transform-based phase estimation, and signal truncation and alignment, an accurate rotating angle curve can ...