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一类库存控制系统的稳定性分析

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Keywords: 供应链系统,库存,稳定性,提前期,最大库存策略

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Abstract:

为了克服供应链系统存在的供货提前期、供货数量、价格等不确定以及市场环境多变的困难,保证供应链系统的库存稳定,建立了在一类改进的最大库存策略下一级库存控制系统的状态空间模型,针对不同的提前期,根据离散控制系统原理结合非线性系统的分析方法,给出了使系统稳定的订货策略参数的取值范围,并对之进行了仿真试验。结果表明,在最大库存策略下,系统的结构稳定性主要由订货决策的参数决定,与外部需求无关,而决策参数选取不当会使系统行为出现混沌等复杂现象。仿真显示,这些现象可使系统有较大的库存偏差,从而导致库存及相关费用的增加,表明稳定性对降低供应链系统的费用、提高其性能有重要意义。

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