Open Access
 Issue JNWPU Volume 37, Number 4, August 2019 824 - 829 https://doi.org/10.1051/jnwpu/20193740824 23 September 2019

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## 2 自适应逆控制系统

 1基于自适应逆控制的永磁同步电机调速系统原理框图

### 2.1 基于归一化LMS的自适应滤波算法

μ为决定收敛快慢和稳定性的系数。LMS算法沿误差超曲面梯度最大的方向搜索, 逼近误差超曲面梯度为零的平衡点, 但该点可能不稳定或是局部极小点, 使得算法陷入局部最小值。同时, 算法迭代是基于误差梯度为零的权矢量的精确解, 增加了算法的时间。

λ带入最优更新权向量得

 图2自适应滤波算法示意图
 3自适应逆控制原理框图

### 2.2 基于扩张状态观测器的扰动消除方法

(3) 式中的永磁同步电机运动方程是在不考虑外部扰动的情况下得到的, 当考虑实际外部扰动对系统产生的影响, 可得如下方程

 图4ESO的扰动观测和补偿原理框图

## 3 实验验证

 5不同转速范围的速度响应
 图6突加、突卸负载
 7电感参数变化的速度响应

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## All Figures

 1基于自适应逆控制的永磁同步电机调速系统原理框图 In the text
 图2自适应滤波算法示意图 In the text
 3自适应逆控制原理框图 In the text
 图4ESO的扰动观测和补偿原理框图 In the text
 5不同转速范围的速度响应 In the text
 图6突加、突卸负载 In the text
 7电感参数变化的速度响应 In the text

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