On the basis of the mathematical model of induction machine, simplified mathematical model is deduced, at the same time the theory of DTC is introduced with the concept of space vector.
本文从异步电机的数学模型出发，推导了异步电机简化数学模型，同时结合空间矢量的概念介绍了直接转矩的基本原理。
Because fault symptom space and fault space have complicated non-linear relations, the mathematical model of diagnosis system is difficult to build up.
由于故障征兆和故障类型之间常常存在复杂的非线性关系，使得诊断系统的数学模型很难获取。
This paper presents the mathematical model and the general algorithms of transforming combinatorial problem into state space search.
本文提出了将组合问题归结为状态空间搜索问题的数学模型和通用算法。
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