基于以电机定子电流和定子磁链为状态变量的状态方程的推导, 提出了一种速度自适应磁链观测器,实现了定子磁链和转速的估计;用在无速度传感器直接转矩控制系统中,具有一定的实用价值。 关键词: 无速度传感器; 直接转矩控制; 模型参考自适应 Abstract : The speed adaptive fluxobserver of an induction motor is proposed byinferring the motor state equation with stator current and stator fluxfor estimating stator velocity and stator flux. The speed-senseless direct torque control systemusing this observer had some usefulness. Key words : speed-senseless ; direct torque control ; model reference adaptive control