| 基于Weibull分布的小型气缸可靠性分析 |
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| 引用本文： | 房学法,王丛岭,杨平.基于Weibull分布的小型气缸可靠性分析[J].机械设计与制造,2011(7). |
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| 作者姓名： | 房学法 王丛岭 杨平 |
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| 作者单位： | 电子科技大学,机械电子工程学院,成都,611731 |
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| 基金项目： | 北京SMC教育基金会教学科研经费资助项目(2009-KYA13-13) |
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| 摘 要： | 在气动系统应用中,气缸作为最多的一种执行机构,其可靠性是实现整个系统安全、可靠的前提。以某小型高速气缸的常规寿命试验为基础,通过对气缸的失效机理分析,确定其失效模型。根据可靠性统计方法确定气缸寿命的具体分布形式。利用中位秩法对失效数据进行预处理,提出利用计算机实现可靠性特征参数的最小二乘估计的方法,并在此基础上建立了气缸可靠性分析模型。应用此模型可以得到气缸的可靠度分布,为气缸的可靠性定量分析提供了一种可行的方法。
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| 关 键 词： | 气缸 Weibull分布 可靠性 最小二乘法 |
Reliability analysis of a small pneumatic cylinder based on weibull distribution |
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| FANG Xue-fa,WANG Cong-ling,YANG Ping.Reliability analysis of a small pneumatic cylinder based on weibull distribution[J].Machinery Design & Manufacture,2011(7). |
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| Authors: | FANG Xue-fa WANG Cong-ling YANG Ping |
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| Affiliation: | FANG Xue-fa,WANG Cong-ling,YANG Ping(School of Mechatronics Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China) |
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| Abstract: | In the application of pneumatic system,the reliability of cylinder as an executive mechanism most of time is a precondition for security of the whole system.Based on the conventional life test of a small high-speed pneumatic cylinder,a failure model is determined through failure mechanism analysis.According to statistics on reliability,the specific distribution form for cylinder life is determined.Then median rank method is applied in pre-processing failure data,and the least squares estimation method is pr... |
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| Keywords: | Pneumatic cylinder Weibull distribution Reliability Least-squares method |
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