【摘要】 在深入研究异步电机直接转矩控制的基础上，提出了基于模型参考自适应方法的速度辨识器， 并将之改进． 仿真结果证明， 应用该速度辨识器的无速度传感器的直接转矩控制系统具有较好的动态性能更多还原

【Abstract】 In this paper, the theoretical analysis of the direct torque control has carried out. A novel approach to estimating the induction motor speed is presented. This method is based on the theory of the model reference adaptive identification algorithm. From the computer simulation it is shown that the speed senseless direct torque control system using this method had good performance.更多还原