In this article, we address the problems of flux and speed observer design for voltage-fed induction motors with unknown rotor resistance and load torque. The only measured signals are stator current and control voltage. Invoking the recently reported Dynamic Regressor Extension and Mixing-Based Adaptive Observer (DREMBAO), we provide the first global solution to this problem. The proposed DREMBAO achieves asymptotic convergence under an excitation condition that is strictly weaker than persistent excitation. If the latter condition is assumed the convergence is exponential.

中文翻译：

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转子电阻和负载转矩未知且无持续励磁要求的感应电机的磁通和速度观测器

在本文中，我们解决了转子电阻和负载转矩未知的电压馈电感应电机的磁通和速度观测器设计问题。唯一的测量信号是定子电流和控制电压。调用最近报道的动态回归器扩展和基于混合的自适应观察器（DREMBAO），我们提供了这个问题的第一个全局解决方案。所提出的 DREMBAO在严格弱于持续激励的激励条件下实现渐近收敛。如果假设后一个条件收敛是指数的。