本文在叠加原理和拉氏变换方法的基础上，分析了感应电机在不同的短路状态下瞬态过程。
On the basis of the superposition principle and Laplace transformation, the process of the transient state under different short circuit states of induction machine is analyzed.
根据专家经验由假设建立一个候选集，每个候选故障的行为都是由与状态相关的瞬态分布征兆序列描述的。
A candidate set is set up with hypothesis according to experts experience, and the behaviors for each candidate fault are described by the temporally distributed symptoms relevant to the state.
针对加速工况，分别对IGBT1导通和截止状态建立了电机驱动系统瞬态数学模型。
Considering various states of IGBT1, transient mathematical models of the electric motor driving system during the acceleration process is built up.
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