摘要：在基于全数字交流矢量的高性能感应电机控制系统中，精确检测转速是一个重要的技术难点，目前，传统的安装类似于编码器的速度传感器的调速方案正被无速度传感器矢量控制系统所代替。本文提出了一种基于BEMF（反电动势）的MRAS（模型参考自适应系统）矢量控制系统速度辨识方法及其数字化实现，通过仿真和实际的实验，验证了该方法的有效性，可以应用于电机实际运行中的转速估算。

关键词：感应电机；BEMF；MRAS；矢量控制；转速估算
Abstract: Based on digital AC vector high performance induction motor control system, the accurate detection of speed is an important technical difficulty, at present, the traditional control scheme such as installing the encoder sensor to detect the speed is being replaced by the speed sensorless vector control system. This paper put forward a kind of based on the BEMF（Back Electromotive Force） of MRAS vector control system speed identification methods and digital realization, through the simulation and real experiments to validate the effectiveness of the proposed method that can be applied to the actual operation of the motor speed estimation.

Key words: induction machine；BEMF；MRAS；vector control；speed estimation