基于改进的威布尔分布的液压支架可靠性评估方法

doi:10.16265/j.cnki.issn1003-3033.2018.05.017

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (5): 99-104.doi: 10.16265/j.cnki.issn1003-3033.2018.05.017

基于改进的威布尔分布的液压支架可靠性评估方法

王慧¹ 教授, 赵国超¹, 宋宇宁² 讲师, 金鑫¹

1 辽宁工程技术大学机械工程学院,辽宁阜新 123000;
2 营口理工学院机械与动力工程系,辽宁营口 115014

收稿日期:2018-02-02 修回日期:2018-04-07 出版日期:2018-05-28 发布日期:2020-11-25
作者简介:王慧(1960—),男,辽宁凌源人,博士,教授,主要从事二次调节控制系统、电液伺服控制系统以及智能控制方法在液压系统中的应用等方面的研究。E-mail:wanghui9955@126.com。
基金资助:
国家自然科学基金资助(51405213);辽宁省教育厅科学研究项目(LJYL028)。

Reliability evaluation method of hydraulic support based on improved Weibull distribution

WANG Hui¹, ZHAO Guochao¹, SONG Yuning², JIN Xin¹

1 College of Mechanical Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China;
2 Department of Mechanical and Power Engineering,Yingkou Institute of Technology,Yingkou Liaoning 115014,China

Received:2018-02-02 Revised:2018-04-07 Online:2018-05-28 Published:2020-11-25

摘要/Abstract

摘要： 为有效提高液压支架可靠性的评估精度,准确描述支架失效率与服役时间的函数关系,基于传统威布尔分布参数求解的平均秩次法,通过改进经验分布函数的建立途径,优化威布尔分布参数的求解过程,进而开发一种液压支架可靠性评估的改进威布尔分布法;根据定时截尾试验结果和液压支架实际使用寿命情况,对所开发的方法的有效性进行验证。结果表明:与传统威布尔分布法相比,采用该方法求解威布尔分布参数时,回归模型的和方差(SSE)减小0.131 3,确定系数(R²)增加1.53%,调整确定系数(Adj R²)增加1.82%,液压支架可靠性评估精度提高0.3%,评估结果更为客观。

关键词: 液压支架, 失效率, 威布尔分布, 可靠性评估, 定时截尾试验, 平均秩次法

Abstract: In order to effectively improve the accuracy of the reliability evaluation of the hydraulic support,accurately describe the functional relationship between the failure rate and the service time of the hydraulic support,an improved Weibull distribution method for reliability evaluation of hydraulic support was proposed basing on the average rank method of solving the parameters of traditional Weibull distribution and improving the establishment of empirical distribution functions and optimizing the solution process of Weibull distribution parameters.The effectiveness of this method was verified by carrying out fixed time truncated tests and referring to the actual service life of the hydraulic support.The results show that compared with the traditional Weibull distribution method,when this method is used to solve the Weibull distribution parameters,the sum of squares due to error (SSE) of the regression model is reduced by 0.131 3,the coefficient of determination (R²) increased by 1.53%,and the adjustment coefficient of determination (Adj R²) increased by 1.82%,the accuracy of the reliability evaluation of the hydraulic support is improved by 0.3% and the evaluation result is more objective.

Key words: hydraulic support, failure rate, Weibull distribution, reliability evaluation, fixed time truncated test, average rank method

中图分类号:

X924.2

王慧, 赵国超, 宋宇宁, 金鑫. 基于改进的威布尔分布的液压支架可靠性评估方法[J]. 中国安全科学学报, 2018, 28(5): 99-104.

WANG Hui, ZHAO Guochao, SONG Yuning, JIN Xin. Reliability evaluation method of hydraulic support based on improved Weibull distribution[J]. China Safety Science Journal, 2018, 28(5): 99-104.

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基于改进的威布尔分布的液压支架可靠性评估方法

Reliability evaluation method of hydraulic support based on improved Weibull distribution

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