一、 三相异步电动机的基本结构 三相异步电动机主要由定子和转子两个部分组成，定子是不动的部分，转子是旋转部分， 在定子和转子之间有一定的气隙

8.1 三相异步电动机的结构 8.2 三相异步电动机的转动原理 8.3 三相异步电动机的电路分析 8.4 三相异步电动机的转矩与机械特性 8.5 三相异步电动机的起动 8.6 三相异步电动机的调速 8.7 三相异步电动机的制动 8.8 三相异步电动机的铭牌数据 8.9 三相异步电动机的选择（自学） 8.11 单相异步电动机

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1. 电子能谱仪的一般构造 2. 超高真空系统(UHV) 3. 激发源 4. 电子能量分析器与检测器 5. 样品的制备和处理 6. 常用附件（中和枪与离子枪） 7. 数据系统

异步电动机和直流电动机一样，亦有三种制动方式：反馈制动、反接制动和能耗制动

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引言（数学模型的概念和意义） 输入输出描述法 数学模型的分类，传递函数，典型环节，系统的相似性，线性化 结构图（方块图）及其等效变换 反馈控制系统的传递函数 闭环传递函数，特征多项式与特征方程