专利详细信息

基于特征子空间优化相对矩阵的铝电解槽况诊断方法

文献类型：专利

专利类型：发明专利

是否失效：否

是否授权：否

申请号：CN201510027742.8

申请日：20150120

发明人：易军黄迪李太福周伟张元涛姚立忠田应甫

申请人：重庆科技学院

申请人地址：401331 重庆市沙坪坝区大学城东路20号

公开日：20170329

公开号：CN104499001B

代理人：余锦曦

代理机构：50216 重庆为信知识产权代理事务所(普通合伙)

语　　种：中文

摘　　要：一种基于特征子空间优化相对矩阵的铝电解槽况诊断方法，其特征在于：一，采集原始测量样本集，对该原始测量样本集进行预处理后投影到核空间；二，对中心化矩阵K进行相对主元分析，建立铝电解槽况诊断模型，并对铝电解槽况进行诊断；三，通过细菌觅食算法在搜索区域内寻得最优相对转换矩阵；四，按步骤二所述方法，利用最优相对转换矩阵建立铝电解槽况诊断模型，实现对铝电解槽况的准确诊断。本发明充分考虑铝电解槽况非线性的特性，通过核函数，将非线性参数投影到高维线性特征空间，在核空间内借助细菌觅食法优化相对转换矩阵，进行相对主元分析，大大提高了铝电解槽况故障诊断的精确度。

主权项：1.一种基于特征子空间优化相对矩阵的铝电解槽况诊断方法，其特征在于：包括下列步骤：步骤一，采集原始测量样本集，对该原始测量样本集进行预处理后投影到核空间，包括：第一步：随机采集n组铝电解槽况数据组成原始测量样本集每个样本含有m个独立的铝电解槽况参数采样值；第二步：对原始测量样本集X⁰进行标准化处理，得到标准化后样本矩阵X；第三步：利用核函数，将标准化后样本矩阵X投影到高维特征空间后得到矩阵K⁰；第四步：对矩阵K⁰进行中心化处理，得到中心化矩阵K，中心化处理按下式进行：K＝K⁰-I_nK⁰-K⁰I_n+I_nK⁰I_n其中，步骤二，对中心化矩阵K进行相对主元分析，建立铝电解槽况诊断模型，并对铝电解槽况进行诊断，包括：第一步：在[0,50)范围内随机产生相对转换矩阵Λ，所述相对转换矩阵Λ为对角矩阵： $<math> <mrow> <mi>Λ</mi> <mo>=</mo> <mfenced open = "(" close = ")"> <mtable> <mtr> <mtd> <msub> <mi>λ</mi> <mn>1</mn> </msub> </mtd> <mtd> <mn>0</mn> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mn>0</mn> </mtd> </mtr> <mtr> <mtd> <mn>0</mn> </mtd> <mtd> <msub> <mi>λ</mi> <mn>2</mn> </msub> </mtd> <mtd> </p><p class='subject'><strong>关键词：</strong><b class='type_ico_id'></b>铝电解槽诊断转换矩阵 <b class='type_ico_id'></b>矩阵原始测量 <b class='type_ico_id'></b>主元分析样本集 <b class='type_ico_id'></b>觅食投影细菌线性特征空间预处理非线性参数 <b class='type_ico_id'></b>特征子空间故障诊断 <b class='type_ico_id'></b>搜索区域核函数中心化高维算法优化采集 </p><p class='class'><strong>IPC专利分类号：</strong>C25C3/20(20060101)</p>
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