Speed sensorless control of a linear synchronous motor using state observer on d-q reference frame
作者： Qiongxuan Ge , Xiaoxin Wang
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摘要: Long stator linear synchronous motors (LSLSM) are being used widely in many areas, for its high dynamic response, robustness and accuracy. But because structure increases the cost complication of position sensor, speed sensorless control methods become more important motor than rotary motor. The paper presents a modified estimation method to get velocity mover based on d-q coordinate system. This utilizes reduced order observer estimate electromotive force (EMF) frame, then extracts phase error between estimated real by EMF. A PI regulator is followed regulate zero output velocity. Then calculated integration
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