动态规划在轧制规程最优化中的应用

An Application of Dynamic Programming to the Optimization of Schedules on a Rolling Mill

  • 摘要: 本文从轧制工艺节能和降低轧制时间的不同角度出发,以带有卷取张力的ROHN型廿辊可逆轧机为对象,应用动态规划探讨了制定轧制规程的新方法.所用方法在顾及机电设备和工艺限制的条件下,综合考虑了厚度分配、轧制次数、轧制速度及张力制度等因素对能耗和时间的影响.理论计算结果表明,最优规程可使现行规程能耗降低6-11%,使时间以更大幅度降低,同时还可使板型和其他指标得到显著改善.在轧机上的实际试验证实了所得的理论结果.

     

    Abstract: For the purposes of reducing power consumption and rolling time in rolling processa new method of devising the schedules for a twenty-high reversing coiler tensionstrip rolling mill of ROHW type by dynamic programming is discussed in this paper.In this method the effects of the drafts,the roll velocities,the coiler tensions andthe number of passes set in the rolling process on the power consumption and therolling time of the mill are considered simultaneovsly,taking account of the constraints from equipment limitation and process requirements.In comparision with empirical schedules used on the mill in the past,our theoretical results by computationshow that the optimum shedules hare reduced the power consumption by 6%~11% and saved the rolling time by a large quantity,while strip shape and other measureshave still improved significantly.Furthermore,the correctness of our the oreticalresults has been shown by the samples from real plant experiments.

     

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