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基于最小二乘法的执行器系统机械属性评价

DOI: 10.13700/j.bh.1001-5965.2013.0493, PP. 881-886

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Abstract:

分析了机械属性评价方法的优缺点,给出了气动执行器和电动执行器系统机械属性的主要评价因素,并列出了执行器系统评价因素数据获取的3个途径,提出了一种基于最小二乘法的执行器系统组合权重机械属性评价方法.首先运用信息熵理论和层次分析法(AHP,AnalyticHierarchyProcess)理论,分别得到两种执行器系统的机械属性权重,然后运用最小二乘法求得执行器系统的组合权重,计算出执行器系统综合评价值,选出最优方案,最后运用具体实例进行了评价方法验证.结果表明,以特定工况下的气动和电动执行器系统为例,运用组合权重机械属性评价方法,得出气动执行器系统比电动执行器系统机械属性更好,符合现场工况;执行器系统的组合权重机械属性评价结果的标准偏差比信息熵和层次分析-模糊综合评价(AHP-FCE,AHP-FuzzyComprehensiveEvaluation)的都小.

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