针对及时化(just in time,JIT)供应模式的入场物流短驳合并优化问题,本文以某汽车制造厂的入厂物流为例,并以供应物流总成本最小为目标,建立数学模型,同时利用基于递降最佳适合算法(best fit decreasing,BFD)思想的启发式算法和改进的...针对及时化(just in time,JIT)供应模式的入场物流短驳合并优化问题,本文以某汽车制造厂的入厂物流为例,并以供应物流总成本最小为目标,建立数学模型,同时利用基于递降最佳适合算法(best fit decreasing,BFD)思想的启发式算法和改进的单亲遗传算法(partheno genetic algorithm,PGA)求解,并分析在此运作模式下的成本与效率。仿真结果表明,单亲遗传算法取消了传统遗传算法的交叉算子,取而代之仅在一条染色体上操作基因换位算子,即使种群中每个个体均相同,它也可以通过基因换位、基因到位等遗传算子来实现遗传迭代,不需要初始群体具有广泛多样性,也就不存在早熟收敛的现象。因此,本文提出的算法比BFD启发式算法的供应成本明显降低。该研究可降低供应成本,提高经济效益。展开更多
Shipbuilding production management and logistics control are studied so as to find an advanced shipbuilding production logistics management style.The necessity and feasibility to integrate MRP-Ⅱ(manufacture resource ...Shipbuilding production management and logistics control are studied so as to find an advanced shipbuilding production logistics management style.The necessity and feasibility to integrate MRP-Ⅱ(manufacture resource planning)and JIT(just-in-time)are researched properly following the comparison of MRP-Ⅱ and JIT and the analysis of shipbuilding production characteristics.A shipbuilding logistics system combining MRP-Ⅱ with JIT is set up and discussed according to a master production schedule(MPS),MRP and workshop-floor production control.The system is able to simplify the shipbuilding production plan,balance the workshop production,stabilize the supply,and inspire positivity and creativity so as to raise the shipbuilding production management level.展开更多
文摘针对及时化(just in time,JIT)供应模式的入场物流短驳合并优化问题,本文以某汽车制造厂的入厂物流为例,并以供应物流总成本最小为目标,建立数学模型,同时利用基于递降最佳适合算法(best fit decreasing,BFD)思想的启发式算法和改进的单亲遗传算法(partheno genetic algorithm,PGA)求解,并分析在此运作模式下的成本与效率。仿真结果表明,单亲遗传算法取消了传统遗传算法的交叉算子,取而代之仅在一条染色体上操作基因换位算子,即使种群中每个个体均相同,它也可以通过基因换位、基因到位等遗传算子来实现遗传迭代,不需要初始群体具有广泛多样性,也就不存在早熟收敛的现象。因此,本文提出的算法比BFD启发式算法的供应成本明显降低。该研究可降低供应成本,提高经济效益。
基金The National Key Technology R&D Program of China during the 11th Five-Year Plan Period(No.2006BAH02A06)
文摘Shipbuilding production management and logistics control are studied so as to find an advanced shipbuilding production logistics management style.The necessity and feasibility to integrate MRP-Ⅱ(manufacture resource planning)and JIT(just-in-time)are researched properly following the comparison of MRP-Ⅱ and JIT and the analysis of shipbuilding production characteristics.A shipbuilding logistics system combining MRP-Ⅱ with JIT is set up and discussed according to a master production schedule(MPS),MRP and workshop-floor production control.The system is able to simplify the shipbuilding production plan,balance the workshop production,stabilize the supply,and inspire positivity and creativity so as to raise the shipbuilding production management level.
