基于ESO磁链观测器的直接转矩控制的研究

讨论直接转矩控制方法在永磁同步电机中的应用问题，利用MATLAB仿真工具对永磁同步电机直接转矩控制系统仿真。针对直接转矩控制低速时存在较大转矩脉动的问题，采用观测器方法克服传统磁链模型中参数的不确定性对磁链观测精度的影响，保证全速范围内磁链的准确估计，提高控制性能。仿真表明观测磁链具有较高的精度，对电阻的不确定变化具有较强的鲁棒性，并可准确估计无速度传感器的速度及位置。

Research of direct torque control based on extended state observer

In this paper,the application of DTC in PMSM is discussed,and simulation of PMSM DTC system is implemented based on MATLAB.For the problem of torque ripple at low speed,observer method is used to overcome the accuracy of flux effects which the traditional flux model parameters uncertainty impact on,the method ensures accurate estimates of flux in the full range,and improves the control performance.The simulations show that flux observation is of high precision and has a strong robustness to the uncertainty ...