| 基于模糊滑模观测器的永磁同步电机进给系统速度估计 |
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| 引用本文： | 崔皆凡,马桂新,谢炜.基于模糊滑模观测器的永磁同步电机进给系统速度估计[J].航空动力学报,2017,44(6):31-34. |
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| 作者姓名： | 崔皆凡 马桂新 谢炜 |
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| 作者单位： | 沈阳工业大学 电气工程学院,辽宁 沈阳110870,沈阳工业大学 电气工程学院,辽宁 沈阳110870,沈阳工业大学 电气工程学院,辽宁 沈阳110870 |
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| 基金项目： | 辽宁省特聘教授专项资助基金(辽教发[2012]145号) |
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| 摘 要： | 为解决目前伺服系统中采用机械位置传感器所存在的诸多缺点,提出一种用于永磁同步电机(PMSM)进给系统的模糊滑模速度观测器,实现无速度传感器控制。针对传统滑模观测器的抖振问题,采用Sigmoid函数代替传统理想开关函数,并引用模糊控制器自适应调整滑模增益以减小抖振,实现软切换连续控制。估计反电动势可以直接由控制函数的输出获得,省略了传统观测器中的低通滤波器和相角补偿。利用李亚普诺夫函数证明了设计的滑模观测器的渐进稳定性。仿真结果表明:设计的模糊滑模观测器能够对PMSM转子速度进行精确辨识,并有良好的动、稳态性能。
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| 关 键 词： | 永磁同步电机 模糊滑模观测器 Sigmoid函数 无速度传感器 |
Speed Sensorless Control of Permanent Magnet Synchronous MotorBased on Fuzzy Sliding Mode Observer |
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| CUI Jiefan,MA Guixin and XIE Wei.Speed Sensorless Control of Permanent Magnet Synchronous MotorBased on Fuzzy Sliding Mode Observer[J].Journal of Aerospace Power,2017,44(6):31-34. |
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| Authors: | CUI Jiefan MA Guixin and XIE Wei |
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| Affiliation: | School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China,School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China and School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China |
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| Abstract: | To solve many defects existing in the mechanical speed sensor of servo system, a fuzzy sliding mode speed observer was proposed for the feed system of the permanent magnet synchronous motor. Focused on the chattering problem of conventional sliding mode observer (SMO), sigmoid function was used instead of the traditional ideal switch function and fuzzy control system was used to adjust the gain of the SMO. This method could decrease undesirable chattering phenomenon and realized the soft control. Detecting back EMF could be done directly from switching signal without any low pass filter. So the delay time because of lowpass filter, in the proposed observer was eliminated and there was no need to compensate phase fault in position estimating. The asymptotic stability of the designed sliding mode observer was proved by Lyapunov function. The simulation results showed that the designed fuzzy sliding mode observer could accurately identify the rotor speed of PMSM, and had good dynamic and static performance. |
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| Keywords: | permanent magnet synchronous motor (PMSM) fuzzy sliding mode observer sigmoid function sensorless control |
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