模糊時間約束下多周期混合運輸配送網(wǎng)絡(luò)優(yōu)化
[Abstract]:With the aggravation of the market competition, the supply chain is in a complex and changeable dynamic environment. The optimization of the supply chain distribution system under the multi-cycle dynamic condition has become the development trend of the supply chain distribution network optimization. As a new distribution mode, hybrid transportation (the combination of supplier and customer matching transport and mismatched transport) effectively solves the problem of empty car transportation in supply chain distribution and reduces the cost of supply chain distribution. However, in the existing research, the hybrid transport mode is applied in the case of supply chain single cycle operation, and the dynamic continuity of the system is ignored in different time, which may lead to the deviation of the optimal result in the practical application. Therefore, it is of practical significance to study the mixed transportation distribution network in dynamic multi-cycle environment. In addition, in the actual distribution environment, there are a large number of unpredictable factors, these uncertain factors on the delivery vehicle arrival time caused interference and impact, There are fuzzy customer reservation time and fuzzy vehicle delivery time in distribution network. However, most of the existing studies only consider the fuzzy time window of the customer, and rarely consider the fuzziness of the vehicle delivery time. Therefore, the combination of fuzzy time theory and distribution network optimization is more in line with the reality and has certain research value. In this paper, the problem of mixed transportation and distribution network under multi-period is studied, and combining this problem with fuzzy time theory, the dynamic of supply chain distribution system is considered synthetically from many angles. Due to the fuzziness of distribution time and customer time window and the diversity of distribution models, the optimization problem of multi-cycle and multi-vehicle hybrid transportation distribution network with fuzzy time constraints is proposed. At the same time, this problem is applied to the three-level distribution network of multi-factory, multi-customer and multi-supplier supply chain. Two 0-1 integer optimization models are established: one is the single cycle multi-vehicle hybrid transportation network optimization model with fuzzy time constraints, the other is the multi-cycle multi-vehicle distribution network optimization model with fuzzy time constraints. Based on the above ideas, the model is more in line with the actual situation of logistics distribution activities. For the solution of the model, the particle swarm optimization algorithm with high efficiency and accuracy is used to solve the problem. The effectiveness of PSO and the practicability of the two models are verified by an example. At the same time, in the contrast experiment, the important parameters of the algorithm and the unit transportation cost of the vehicle are set respectively, which verifies the influence of the parameters on the performance of the algorithm and the stability of the model. The stable model has a good guiding effect on long-term decision-making. The results show that the multi-cycle supply chain distribution model is more superior than the single-cycle supply chain distribution model, which can effectively allocate and plan the enterprise resources, and make the optimization cost lower.
【學(xué)位授予單位】:福州大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:F274;TP18
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