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在实际系统故障诊断时，由于测得的数据总是含有噪声的，因此影响了故障诊断方法的可靠性。本文在使鲁棒标准最小化的基础上进行滤波，将经过滤波的曲线与理想模型作相关运算，从而使故障诊断的可靠性大大增强。
In actual system fault diagnosis, the reliability of the fault diagnosis method is affected because the measured data always contains noise. In this paper, the robust standard is minimized based on the filter, the filtered curve and the ideal model for the relevant operations, so that the reliability of fault diagnosis greatly enhanced.