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A theoretical study was conducted on finding optimal paths in transportation networks where link travel times were stochastic and time-dependent（STD）. The methodology of relative robust optimization was applied as measures for comparing time-varying, random path travel times for a priori optimization. In accordance with the situation in real world, a stochastic consistent condition was provided for the STD networks and under this condition, a mathematical proof was given that the STD robust optimal path problem can be simplified into a minimum problem in specific time-dependent networks. A label setting algorithm was designed and tested to find travelers＇ robust optimal path in a sampled STD network with computation complexity of O（n2＋n·m）. The validity of the robust approach and the designed algorithm were confirmed in the computational tests. Compared with conventional probability approach, the proposed approach is simple and efficient, and also has a good application prospect in navigation system. 相似文献
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我公司篦冷机出料温度为６５℃＋环境温度，出料粒度２５mm，锤式破碎机规格为Φ１２３０×２７００，共１８个锤头，环向分成４组，轴向每组锤头以４、５、４、５交错排列，锤头原固定方式见图１。图１锤头原固定方式自１９９５年运行以来，销轴经常发生从中间M１０螺纹孔处断裂，平均每月３～５根，导致锤头脱落，锤平衡受到破坏。经过长期观察发现，销轴断裂经常发生在锤破中间靠左侧的１４个锤头中，分析原因是熟料落入篦冷机后产生离析，大块熟料或窑垮圈时的大块窑皮落入篦冷机后均在左侧（回转窑顺时针旋转），必然加剧对左侧锤头的… 相似文献
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