At last, the experiment for the mini-device of NMR imaging, which is finished together with the relative company, proves the efficiency of the optimized schemes of pole shape presented in this thesis.

最后，本文以一种小型核磁共振成像装置作为实例，并与有关单位合作，用实验对优化方案进行了验证，证明了本文提出方法的有效性。

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Simultaneously, the forming process of claw-pole was studied with numerical simulation and FEA method, property parameters and relative field information during the forming process were also obtained.

同时，采用数值模拟和有限元分析的方法获得了成形过程的力能参数和相关的场量信息。

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The Genetic Algorithm(GA) is used to optimize the pole-zero location in all-pass networks of 30 and 60 relative phase-shift, and good phase-frequency characteristics are obtained.

然后利用遗传算法分别对30和60十倍频宽带相对相移网络的零极点参数值进行了优化，得到了较好的相位频率特性结果；

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