Nonlinear speed tracking control for sensorless PMSMs with unknown load torque: From theory to practice

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• 作者：S. Bifaretti ^{bifaretti@ing.uniroma2.it} ; V. Iacovone ^{vincenzo.iacovone@uniroma2.it} ; A. Rocchi ^{alessandro.rocchi@hotmail.it} ; P. Tomei ^{tomei@ing.uniroma2.it} ; C.M. Verrelli ; ^{verrelli@ing.uniroma2.it}
• 关键词：Permanent magnet synchronous motors ; Sensorless control ; State estimation ; On-line parameter identification
• 刊名：Control Engineering Practice
• 出版年：2012
• 期刊代码：43_09670661
• 类别：et
• 出版时间：July, 2012
• 卷：20
• 期：7
• 页码：714-724
• 文件大小：1986 K

摘要

In this paper the speed tracking control problem for sensorless (nonsalient-pole surface) permanent magnet synchronous motors (PMSMs) with unknown load torque is addressed. Simulation and experimental results are presented for the first nonlinear adaptive control which (i) relies on a closed loop stability proof using nonlinear stability tools; (ii) feeds back stator current and voltage measurements only without using non-robust open loop integration of motor dynamics. Satisfactory performances are obtained in practice in conditions which can be inferred by deeply analyzing the reported theoretical analysis.