由于其自身的结构与封装形式，塑封双极型功率管存在很多可靠性问题。
Plastic capsulation power bipolar transistor exists many reliability problems due to the structure and package style.
针对这样的情况，本文提出了通过人工神经网络拟合极限状态函数的方法来解决结构系统的可靠性问题。
To such a situation, this text has put forward and fitted the reliability problem of solving structure system of method of the state function of limit through the artificial neural network.
随着电力系统规模的扩大，结构越来越复杂，输电网络的地位在整个系统中的重要性愈加突出，电网的可靠性问题受到日益的关注。
With the development of power system and the complexity of system structure, transmission network is more important in the whole system, so people pay more attention to reliability of power system.
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