【摘要】 提出了一个基于自适应磁链观测器的速度辨识方案。应用Lyapunov稳定性理论,观测器的增益借助于Matlab中LMI工具箱求解一线性矩阵不等式得到,它解决了采用极点配置的自适应速度观测器存在不稳定区域的问题。利用速度估计自适应机构和矢量控制方案设计了无速度传感器感应电机矢量控制系统。仿真结果表明提出的鲁棒自适应观测器在全速范围内具有很好的稳态和动态性能,并具有很好的鲁棒性。更多还原

【Abstract】 A novel speed identification scheme was proposed based on an adaptive flux observer.By using the Lyapunov stability theory,the gain of the observer could be obtained by solving a linear matrix inequality(LMI) in Matlab LMI toolbox,which solves the unstable problem of the adaptive speed observer using pole-placement technique.Finally,a speed sensorless induction motor drive was designed by using the speed adaptive estimation scheme and the vector control technique for torque and stator flux control.Simulation results indicate that the proposed observer has good steady and dynamic performance and good robustness.更多还原