基于多目标优化的冷连轧轧制规程计算方法

Method of Calculation for Rolling Schedule for Tandem Cold Mill Based on Multi-objective Optimization

以冷连轧现场实际生产情况为出发点,综合考虑板形最优、能耗最小、各种负荷均衡、生产率最高等条件,建立了轧制规程多目标函数模型。在现场设备及工艺条件约束下,结合Nelder-Mead单纯形法对多目标函数进行寻优计算。现场实际应用表明,该轧制规程计算方法计算的轧制规程符合生产要求、速度较快、模型计算结果精度较高,具有广泛的应用前景。

Taking the actual conditions of operations on the site of the tandem cold mill as the first consideration together with comprehensively considering such factors as optimum of strip shape, minimum energy consumption, equilibrium of different loads balance and highest production rate, the multi-objective function model for the rolling schedule was established. Being subject to the equipment on the site and existing technology, the optimizing calculation for multiple objective functions was done by using Nelder-Mead simplex method. According to the actual application of the method of calculation used for the rolling schedule on the site, the rolling schedule calculated by the calculation method above mentioned can meet the requirements required by the production practice, which is characterized by the faster computation speed and higher computational accuracy carried out by the calculation model. So this kind of model has an extensive application prospect.