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物料加热过程的最优准则及优化理论的研究

李宗瑞 , 陆钟武

金属学报

通过对物料加热的热力学分析,建立了低能耗的最优加热准则。以此准则为依据,运用线性二次型性能指标的控制理论,研究了通用的加热过程优化方法。新的优化方法不仅适用于研究物料加热的时变供热问题,也适用于研究分布供热问题。在均热炉上初步应用,结果比较满意。

关键词: 加热 , optimal criterion , control theory , null

THEORY OF DYNAMIC OPTIMIZATION FOR MATERIALS HEATING PROCESS——CRITERION RESTRAINING METHOD

LI Zongrui LU Zhongwu Northeast University of Technology , Shenyang , China

金属学报(英文版)

A criterion restraining mehod adopted to the dynamic optimization for materials heat- ing process has been developed,by regarding it as controlled object of a regulator in control theory and combining the optimal criterion of it.The method may be available to optimize fuel supply along furnace length and to provide a theoretical basis for the optimization of fuel supply in time-varying.For soaking pit,the calculation shows that in case of optimization by criterion restraining method,the thermal efficiency is 3.1 higher than the modelling prediction result.In comparison with heat flux-decomposing method,the thermal efficiency increased from 43.1 to 43.8%,and the energy consumption was reduced by 7.28% relative to the practical production data.

关键词: optimization , null , null , null

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