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基于DDVS的非线性电路故障诊断

Fault Diagnosis of Non-linear Circuits Based on DDVS
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摘要 针对故障状态下非线性强弱变化造成的参数估计数值稳定性问题,提出了基于动态增量Volterra级数(DDVS)的非线性电路故障诊断方法。首先讨论DDVS核与Volterra核的对应关系,分析DDVS在参数估计中的数值稳定性问题;再提出基于DDVS参数估计的故障特征提取方法。通过仿真说明:该方法能有效协调截尾误差与数值稳定性之间的矛盾;具有较好的准线性化分解能力。 Aimed at the impact of non-linear changing from strong to weak on the value stability of parameter estimation,the method of fault diagnosis of non-linear circuits was proposed based on dynamic deviation Volterra series（DDVS）.The relation between the core of DDVS and Volterra core was discussed,the value stability resulted from DDVS in parameter estimation was analyzed.And then the fault characteristics extracting method based on DDVS parameter estimation was put forward.Finally,by simulation it indicates that the proposed method can coordinate effectively the truncation error and value stability,and have a better capability of quasi-linearization decomposition.
作者 徐晨曦 张贤志 项建涛
机构地区 空军雷达学院二系
出处 《空军雷达学院学报》 2010年第5期367-371,共5页 Journal of Air Force Radar Academy
关键词 非线性模拟电路 故障诊断 VOLTERRA级数 动态增量Volterra级数 non-linear analog circuit fault diagnosis Volterra series dynamic deviation Volterra series（DDVS）
分类号 TN710 [电子电信—电路与系统] TP391.4 [自动化与计算机技术—计算机应用技术]
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参考文献5

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二级参考文献16

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空军雷达学院学报
2010年 第5期

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