【作者】 曹景；

【导师】 李宗平；

【作者基本信息】 西南交通大学 ， 物流工程， 2008， 硕士

【摘要】 在当前的市场经济条件下,企业之间的竞争更加激烈,尤其中国加入WTO后,市场竞争更加残酷,要求更高、更具体,因此,严格控制备件资金占用,用最经济的费用达到确保设备安全、稳定和持续运转,保证生产正常进行,提高企业经济效益是备件管理工作的宗旨。企业在使用设备过程中,为了保证设备的正常运转,需要制定维修计划,需要对备件的采购和储备进行决策。尤其是在企业购买设备的昂贵部件时,经常同时也以优惠价格买下备件,需要确定采购多少备件,保持什么样的备件库存水平,对备件储备进行正确决策。合理的备件储备是现代企业管理中的一个重要课题。合理的库存储备能在保证设备正常运转的前提下,降低库存,加速资金周转,减少流动资金占用,从而提高企业经济效益。本文主要针对具有串联结构的系统昂贵备件储备量设置进行研究。基于已有备件库存理论及系统运行可靠性的研究,本文对与系统运行可靠性有关的影响因素进行了分析。然后本文给出了在已知系统连续运行时间的情况下和备件存贮所需总成本一定情况下,系统备件储备量的配置问题,并建立了单目标数学模型。接着本文综合考虑了系统运行时间、备件设置总费用两个目标函数,给出了基于可靠性的备件储备量设置的多目标优化模型,并给出了求解模型的遗传算法。最后,应用数值仿真的方法对备件设置的多目标决策进行了求解。更多还原

【Abstract】 In the current market economy, the competition between the enterprises becomes more and more acute, especially after China enter WTO. The market competition becomes more furious and higher, so the cost of spare parts must be controlled strictly. The most economical effect keeps the equipment safely and stably running, and keeps production being on the rails. It is the tenet of spare parts management that to enhance the economical benefit of enterprises.The enterprises need to institute the maintenance plan and do thedecision-making of the stock and storage of the spare parts in process of using the equipment. When the enterprises purchase the valuable parts, they usually buy the spare parts. So it needs to confirm the amount of the spare parts to be stocked and keep the appropriate storage of the spare parts. It needs the right decision-making. It is an import problem to have a logical storage of the spare parts for the enterprises management. The logical storage of the spare parts can reduce the stock and accelerate the fund turnover. So it improves the economy benefit of the enterprise.The paper mainly makes research on how to set up the reserves of costly spare parts in series. Based on the present inventory theory of spare parts and the reliability theory, the paper analyses the relational factors of the system reliability. With the conditions of the determinate runtime and the determinate cost of spare parts, the paper studies the spare parts collocation and put forward the mathematics model with odd object. After, according to the determinate runtime and the determinate cost of spare parts, there is given the multi-object optimization model of the spare parts collocation based on the reliability. The solution of the spare parts optimization model is discussed using a genetic algorithm. Finally, the discussion about the multi-object optimization model of the spare parts collocation is given using the method of numerical simulation.更多还原