| 基于分数阶滑模观测器的永磁同步电机无传感器矢量控制 |
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| 引用本文：何克胜，王 英.基于分数阶滑模观测器的永磁同步电机无传感器矢量控制[J].计算技术与自动化,2018,(3):25-29 |
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| 中文摘要:为解决基于传统滑模观测器的永磁同步电机转速和位置估计精度不高以及抖振过大等问题，设计了一种分数阶滑模观测器。首先根据分数阶理论提出一种分数阶滑模趋近律，并证明其稳定性；然后将永磁同步电机的定子实际电流与估计电流的差值作为滑模面，利用分数阶滑模趋近律设计滑模观测器的控制律，获取反电动势后采用锁相环提取转速和位置；最后建立了永磁同步电机无传感器矢量控制的仿真模型。仿真结果显示新型分数阶滑模观测器不仅静态性能好，而且与基于指数趋近律设计的滑模观测器相比，具有动态跟踪速度快、观测精度高、抖振小等优点。 |
| 中文关键词:永磁同步电机 分数阶 滑模趋近律 滑模观测器 矢量控制 |
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| Sensorless Vector Control of Permanent Magnet Synchronous Motor Based on Fractional-order Sliding Mode Observer |
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| Abstract:In order to solve the problem that the traditional sliding mode observer speed and position estimation accuracy is not high and the chattering is too large，a fractional sliding mode observer is designed.Firstly，According to the fractional theory ，a fractional sliding mode reaching law is designed and its stability is proved.Then，the difference between the actual current and the estimated current is taken as the sliding surface.The control law of the sliding mode observer is designed by the fractional-order sliding mode reaching law.After obtaining the back electromotive force，the rotational speed and position are extracted by the phase locked loop.Finally，the simulation model of permanent magnet synchronous motor is established by using phase-locked loop.The simulation results show that the new fractional order sliding mode observer has good static performance.And compared with the sliding mode observer based on the exponential reaching law，it has the advantages of fast tracking speed，high observation accuracy and small chattering. |
| keywords:permanent magnet synchronous motor（PMSM） fractional order sliding mode reaching law sliding mode observer vector control |
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