基于可变缓冲区存储量的串行生产线节能分析

Energy-saving analysis of serial production lines based on the changeable buffers' storage

为了降低串行生产线的能源消耗,提出了基于可变缓冲区存储量的节能方法。针对缓冲区容量有限及机器失效和修复服从指数分布的串行生产线,考虑节能与产出比率之间的平衡,以产出量作为前提条件,建立了以节能最大化为优化目标的数学模型。考虑机器自身的状态与其上下游缓冲区的实时存储量,提出了基于贪婪算法与概率接受准则的演化迭代算法。最后,进行了仿真试验,结果表明所提的节能方法是有效的、可行的。

We proposed an energy-saving method based on the storage of changeable buffers to reduce the energy consumption of serial production lines. In particular,considering the serial production lines with finite buffers and the time to failure and repair of machines subjected to the exponential distribution,the tradeoff between the productivity and energy savings was discussed and a problem domain was formulated to maximize the energy-efficiency,given the productivity of a manufacturing system. An evolution algorithm,incorporated with greedy algorithms and the acceptance probability rule,was designed while considering the state of machines as well as real-time storages of up-down stream buffers. Finally,simulation experiments were conducted,and the results demonstrate that the proposed energy-saving algorithm is feasible and effective.