基于确定性近似方法的再制造生产计划

再制造是一种以节约资源和保护环境为指导思想的新兴制造模式。由于再制造过程中存在诸多不确定性因素,其生产计划的制订远比传统制造方式复杂。针对再制造过程的不确定性特点,建立单一产品再制造生产计划的机会约束规划模型,并运用确定性近似方法对模型进行求解;进而探讨确定性近似问题与原问题的误差范围。特殊分布下的算例分析表明确定性近似解的误差在可接受的范围之内。

再制造最优生产计划模型的CVaR凸逼近及SAA算法

研究企业再制造综合生产计划问题,构建了一个更符合实际的带联合概率约束的最优化模型.针对此非凸优化问题求解上的困难,采用CVaR逼近将模型等价转化为凸优化模型,然后运用样本平均近似方法进行求解,证明了算法的收敛性,数值结果表明了模型和算法的有效性.

废旧产品回收再制造计划模式研究述评

在分析再制造基本概念及流程的基础上,从废旧产品回收计划、回收产品拆卸计划、再制造生产计划等三个方面对国内外再制造计划模式的研究现状进行综述。指出目前研究中对再制造过程的不确定性特征认识不足、对产品回收后的状态不能有效预测、对不确定情形的产品拆卸计划研究较少、对于再制造生产计划与控制缺乏系统研究。针对上述不足,提出了进一步研究的方向。

Remanufacturing production planning considering quality cost and demand substitution

Aiming to minimize the total production costs in a single planning period, a nonlinear integer programming model for remanufacturing production plans is established considering the influence of different qualities of returns acting on production cost. Three different remanufacturing and discarding strategies are adopted to analyze the change rules of the total production costs. The results returns is greater than indicate that when the number of remanufacturing returns of high the demand, preferentially quality and discarding those of low quality can bring better economic benefits due to manufacturing cost reduction. However, when the number of returns is smaller than the demand, there is no need to consider grading of returns, whereas new demand of remanufacturing. parts are required to satisfy the