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Reliability Modeling and Maintenance Policy Optimization for Deteriorating System Under Random Shock
Performance degradation and random shock are commonly regarded as two dependent competing risks for system failures. One method based on effective service age is proposed to jointly model the cumulative effect of random shock and system degradation, and the reliability model of degradation system under Nonhomogeneous Poisson processes (NHPP) shocks is derived. Under the assumption that preventive maintenance (PM) is imperfective and the corrective maintenance (CM) is minimal repair, one maintenance policy which combines PM and CM is presented. Moreover, the two decision variables, PM interval and the number of PMs before replacement, are determined by a multi-objective maintenance optimization method which simultaneously maximizes the system availability and minimizes the system long-run expect cost rate. Finally, the performance of the proposed maintenance optimization policy is demonstrated via a numerical example. 相似文献
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汽车发动机机油消耗过量(超过0.1-0.5L/100km),是发动机众多故障的综合反映。此时,不但机油油耗增加,而且发动机综合工况也变得越来越差。发动机机油油耗过高的原因有两个方面:一是机油泄漏;二是机油进入燃烧室被烧掉了。无论何种 相似文献
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轮机模拟器仿真软件的开发 总被引:3,自引:0,他引:3
介绍了SMSC-2000型轮机模拟器软件系统的结构,实时工控平台开发软件,人机界面的实现以及系统仿真软件的开发技术。 相似文献
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我们都应该要学会宽容,懂得宽容别人!宽容应该是一种人类精神,是一种善良,一种美;是一种胸怀和气度;更是一种境界。只有善良的人,心胸中才有宽容,只有慈悲的心灵里才能放得下宽容。宽容是美好心灵的代表!宽容别人不但自己轻松自在,别人也舒服自然。宽容是一种坚强,而不是软弱。是一种修身之法,是一种充满智慧的处世之道。宽容别人其实就是宽容自己,它可以化解许多不必要的误会。多一点对别人的宽容,我们生活就会多一点空间。 相似文献
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