| 张 港,高文根,杭孟荀,李鹏飞,裴 同.基于改进 SMO 的永磁同步电机全速段位置估算研究[J].电子测量与仪器学报,2021,35(7):185-193 |
| 基于改进 SMO 的永磁同步电机全速段位置估算研究 |
| Research on position estimation of permanent magnet synchronous motorat full speed based on improved SMO |
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| DOI： |
| 中文关键词: 永磁同步电机 滑模观测器 双曲正切函数 放大因子 K 自适应滤波器 仿真分析 |
| 英文关键词:permanent magnet synchronous motor sliding mode observer hyperbolic tangent function amplification factor K adaptive
filter simulation analysis |
| 基金项目:安徽省重点研究与开发计划项目（201904a05020007）、安徽省支持新能源汽车产业创新发展和推广应用项目、国家级大学生创新创业训练计划项目（202010363026）资助 |
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| 中文摘要: |
| 为了改善传统滑模观测器( sliding mode observer, SMO)存在高频抖振、相位延迟、低速段失效等问题,提出一种改进
SMO 控制策略。 该方法在低通滤波器之前引入一个放大因子,放大反电动势信号以便于提取估计;采用双曲正切函数替换符
号函数,减少系统的高频抖振与信号干扰;采用自适应滤波器来提高检测精度,减小相位延迟。 通过 MATLAB/ Simulink 仿真分
析比较了改进 SMO 和传统 SMO 两种策略,结果显示改进 SMO 相较于传统 SMO 相位延迟时间缩短了 97. 5%,并且能够显著减
少抖振现象,精准估计 20 r/ min 以下的电机转速,实现在全速段保持良好的估算性能,表明改进 SMO 策略具有更优的估算精度
和适应性能。 |
| 英文摘要: |
| In order to improve the problems of high-frequency chattering, phase delay, and low-speed failure in traditional sliding mode
observers (SMO), this paper proposes an improved SMO control strategy. This method introduces an amplification factor before the lowpass filter to amplify the back-EMF signal for easy extraction and estimation; adopts the hyperbolic tangent function as the sign function
to reduce the high-frequency chattering and signal interference of the system; adopts an adaptive filter to improve detection Accuracy,
reduce phase delay. Through MATLAB/ Simulink simulation analysis, the two strategies of improved SMO and traditional SMO are
compared. The results show that the improved SMO reduces the phase delay time by 97. 5% compared with the traditional SMO, and it
can significantly reduce chattering phenomenon, and accurately estimate the motor below the speed of 20 r/ min. , to achieve good
estimation performance at full speed, indicating that the improved SMO strategy has better estimation accuracy and adaptability. |
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