TY - JOUR T1 - Improved speed estimation in sensorless PM brushless AC drives JO - IEEE Transactions on Industry Applications PY - 2002/07/01 AU - Shen JX AU - Zhu ZQ AU - Howe D ED - DO - DOI: 10.1109/TIA.2002.800778 VL - 38 IS - 4 SP - 1072 EP - 1080 Y2 - 2025/11/14 ER -