This paper compares the features of motor traditional starting method and motor soft starting method, briefly describes the principle and functions of a soft starter.
比较传统启动方式与软启动方式特点，简述软启动器的原理、功能。
The paper introduced the soft starting system of asynchronous motor controlled by 80c196kb, and gave the mathematic model of the system and designing method of the software.
介绍了用80c196 KB控制的异步电动机软启动系统，给出了系统建立的数学模型及软件设计方法。
Features of FPGA device and design method in EDA environment are introduced. Further discussion is made in its application in soft starting and energy saving control of the asynchronous motor.
介绍了现场可编程门阵列（FPGA）器件的特点和电子设计自动化（EDA）环境下的设计方法，就其在异步电动机软启动及节能控制上的应用进行了深入的讨论。
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