【摘要】 采用二级模糊综合评判技术确定交流接触器的最佳合闸相角.首先利用正交试验建立了CJ20-25型交流接触器21个动态特征参数的原始数据库,然后按照二级模糊综合评判方法计算得到唯一评判指标.考虑到产品性能的差异,利用每台样品的评判值拟合曲线求解均值f准和方差S准,再进行一级模糊综合评价,综合考虑确定了最佳合闸相角的范围,且实验结果和仿真结果基本一致.实验结论可为同类电器产品性能的评判提供较为精确的试验条件.更多还原

【Abstract】 The best closing phase angle of AC contactor is ascertained based on multi-level fuzzy comprehensive theory. A database containing 21 dynamic parameters for CJ20-25 AC contactor is established by means of orthogonal experiment, and then the only evaluation index is determined by two-stage fuzzy comprehensive evaluation.Considering the differences between samples’ performance, the average valuefΦ and mean square errorSΦ in the fitting curve of each product’ s evaluation value are solved, and then the best angle is determined by using the one-level comprehensive evaluation. The relsult of experiment is consistent with simulation, so it will provide more accurate equipment condition to evaluate the similar devices’ performance.更多还原