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基于生命周期的智能家居故障预测诊断算法
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摘要
随着我国人民生活水平的提高,智能家居逐渐走进寻常百姓家,因此,智能家居系统的研究日益成为各高校、研究所和企业研究的热点,但是却很少有关于智能家居系统故障预测诊断方面的研究。
     本文以智能家居的故障诊断为研究背景,在基于MAS智能家居能量系统MAES(Multi-Agent-based Home Energy System)研究的基础上,对智能家居系统的故障特征进行分析,得出智能家居系统故障相互关联、“黑色”参数与“白色”参数共存等特点。针对故障相互关联的特点,本文以历史故障数据库为样本,采用概率统计的方法,提出了基于生命周期的智能家居故障检测。针对智能家居系统作为灰色系统的特点,本文以灰色预测理论作为理论基础,采用灰色预测模型,通过智能家居故障特征参数的实时监测,实现了智能家居故障特征参数的预测,并以基于生命周期的智能家居故障检测算法获得的检测阈值为判断依据,实现了故障的提前预测。针对灰色关联分析应用于智能家居故障诊断的优势和不足,本文以灰色关联理论为基础,提出了以故障率作为优化因数的智能家居故障优化灰色关联度诊断算法,该优化因数的获得是以威布尔分布函数作为拟合曲线,采用一元线性回归和最小二乘法,获得家居设备或零部件全生命周期的故障率函数而得到的。最后的例子验证了该算法的有效性。
With the improvement of living standards of our people, Smart Home gradually moves into the ordinary family. Therefore, the study on Smart Home system has increasingly became the focus of colleges, universities, research institutes and enterprises. But the study on the fault forecast and diagnosis of Smart Home system are very few.
     The paper chooses the Smart Home’s fault diagnosis as research background, on the basis of MAS-based Smart-Home energy system MAES (Multi-Agent-based Home Energy System), analyzes the Smart Home’s fault characteristics, testifies the features of Smart Home system that faults are interrelated and "black" parameters and the "white" parameters are coexistence. In view of the characteristics of faults are interrelated, the paper chooses historical faults database as swatches, the statistical probability method as method, proposes Smart Home fault detection based on the lifecycle. In view of the characteristics that the Smart Home system is a gray system, the paper chooses Grey Prediction Theory as a theoretical foundation, using a GM model, based on the real-time monitoring data of the Smart Home feature fault parameters, achieves the fault characteristic parameters’forecast, and chooses the threshold values of the Smart Home fault detection algorithm based on the lifecycle as a diagnosis judgment, achieves the fault forecast. In view of the strengths and weaknesses of Grey correlation analysis for the fault diagnosis of the Smart home, the paper also chooses Grey Relation Theory as foundation, put forwards The Smart Home optimization grey correlation fault diagnosis algorithm based on fault rate, to get the optimal factor, the paper chooses Weibull distribution function as a fitting curves, using 1st Linear Regression and Least-squares method, gets the home equipment’s or parts’full lifecycle fault rate function. The final example verifies the effectiveness of the algorithm. Keyword:Smart home,Lifecycle,fault forecast diagnosis,Grey System Theory
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