高阶滑模控制永磁同步电机在线状态估计

为实现永磁同步电机的状态在线估计,采用一种新型带有微分器的高阶滑模控制技术.由于系统输出耦合,利用反馈线性化进行解耦.设计了高阶滑模控制器消除传统滑模控制中的抖颤问题,状态估计中的滑模变量及其微分值通过任意阶精确滑模微分器得到,避免复杂计算同时保证了精度,同时电机状态的估计值可以替代用于检测的传感器.仿真实验结果表明,多输入多输出的永磁同步电机系统具有较好的动态性能,同时其状态变量得到了在线精确估计.

State Estimation Online for PMSM via High Order Sliding Mode Control

The state estimation problem of a permanent magnet synchronous motor(PMSM) is discussed via high order sliding mode with differentiator controller.For the output signals are coupled,feedback linearization is used to realize decoupling.The high order sliding mode control is designed to avoid chattering problem which exists in traditional sliding mode.Then in state estimation,the sliding mode variables and their derivatives are obtained by differentiator directly,which avoids the complex calculation and ensur...