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针对永磁同步电机传统滑模控制的调速性能受到电机系统状态变量变化的影响
提出了一种采用支持向量机智能预测永磁同步电机可变参数非奇异快速终端滑模控制策略。首先设计了一种快速收敛的新型可变参数非奇异快速终端滑模面
该滑模面实现了全局快速收敛且消除了奇异现象并且滑模参数随系统状态改变
实现了不同系统状态下
永磁同步电机可以始终保持优异的调速性能;然后
引入支持向量机智能算法对滑模面状态变量参数建模
实现滑模面状态变量参数根据电机系统状态在线调整;最后
采用角速度与q轴定子参考电流二阶模型来设计永磁同步电机可变参数非奇异快速终端滑模速度控制器以减小模型误差。数值仿真结果表明:采用支持向量机建立的滑模面状态变量参数预测模型能够根据电机系统参数变化预测得到滑模面状态变量参数最优值;所提出的可变参数非奇异快速终端滑模控制策略与非奇异快速终端滑模控制策略相比
控制性能不受电机参数变化的影响
具有收敛速度快、鲁棒性好、转速超调小、控制精度高等优点。
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