中文摘要：

首先概述了无轴承异步电动机的研究背景，指出了研究意义及其潜在的使用价值，然后介绍其工作原理，在此基础上，重点分析了无轴承异步电动机基本理论的研究现状，包括径向悬浮力模型、解耦控制及其控制系统，最后展望了应用和前景。

英文摘要：

Research background, research significance and the latent use of bearingless induction motors introduced fristly. Then, the operation principle of rotor magnetic suspension force for bearingless induction motors were introduced. And the research status of fundamental theory were expounded, included the rotor magnetic suspension force, decoupling control and control system. In the end, the application and prospect of bearingless induction motors were viewed.