现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
20期
166-170
,共5页
电子信息系统%故障诊断%神经网络%故障字典
電子信息繫統%故障診斷%神經網絡%故障字典
전자신식계통%고장진단%신경망락%고장자전
electronic information system%fault diagnosis%neural network%fault dictionary
针对电子信息系统结构复杂、难于建立精确数学模型等特点，以某型电子信息系统为例，采用故障字典和BP神经网络相结合的方法，利用Multisim软件进行电路仿真。再由实测样本数据对BP神经网络进行训练，完成对网络各参数的设置。仿真结果表明，该方法可以较好地将故障定位到元器件，同时可为其他电子信息系统模块级故障诊断技术研究提供借鉴。
針對電子信息繫統結構複雜、難于建立精確數學模型等特點，以某型電子信息繫統為例，採用故障字典和BP神經網絡相結閤的方法，利用Multisim軟件進行電路倣真。再由實測樣本數據對BP神經網絡進行訓練，完成對網絡各參數的設置。倣真結果錶明，該方法可以較好地將故障定位到元器件，同時可為其他電子信息繫統模塊級故障診斷技術研究提供藉鑒。
침대전자신식계통결구복잡、난우건립정학수학모형등특점，이모형전자신식계통위례，채용고장자전화BP신경망락상결합적방법，이용Multisim연건진행전로방진。재유실측양본수거대BP신경망락진행훈련，완성대망락각삼수적설치。방진결과표명，해방법가이교호지장고장정위도원기건，동시가위기타전자신식계통모괴급고장진단기술연구제공차감。
Since it is difficult to establish precise mathematical model for electronic information system due to its complex structure,taking a certain type of electronic information system as an example,a method to combine a fault dictionary with BP neural network is adopted. The circuitry emulation was performed by means of Multisim software. The BP neural network was trained with the measured data. The setup of network parameters was accomplished. The emulation result indicates that this meth-od can preferably localize a fault to a certain component,and can be used as a reference for research on block-level fault diagno-sis technology for other electronic information systems.
