基于混沌博弈理论的多源微波加热温度均匀性优化  

Optimization of Temperature Uniformity for Multi-source Microwave Heating Based on Chaos Game Theory

作　　者：杨彪[1,2,3] 韩泽民 段绍米 黄宏彬[1] 吴照刚 彭飞云 YANG Biao;HAN Zemin;DUAN Shaomi;HUANG Hongbin;WU Zhaogang;PENG Feiyun(Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Key Laboratory of Artificial Intelligence,Kunming University of Science and Technology,Kunming 650500,China;Key Laboratory of Unconventional Metallurgy of Ministry of Education,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500 [2]昆明理工大学云南省人工智能重点实验室,昆明650500 [3]昆明理工大学非常规冶金教育部重点实验室,昆明650093

出　　处：《材料导报》2025年第3期50-57,共8页Materials Reports

基　　金：国家自然科学基金(62363019,61863020)。

摘　　要：本工作研究了多源微波加热系统中材料内部整体温度均匀性的优化问题,也就是在谐振腔体存在驻波的情况下,实现温度场梯度最小的优化目标。首先,从微波频率的动态变化出发,采用热点交替的移频方法,逆转材料温域分布,实现材料间冷热点的中和,达到均匀加热的目的。然后,基于不同微波源之间的耦合程度差异,引入混沌博弈优化算法重构不同频率下各个微波源的馈入功率数值,在确保温度均匀性不变的情况下,提升材料的整体温度。最后,通过多源微波与SiC材料相互作用的仿真实例来分析加热过程,并开展对均匀性指标的有效计算。数值计算结果表明,与固定频率加热和扫频加热相比,所提出的方法均匀性分别提升了26.3%~70.2%和60.0%~62.7%,同时加热效率分别提高了2.5%~41.7%和14.2%~14.6%,能有效地改善微波加热的温度均匀性。This work studied the optimization problem of the overall temperature uniformity inside the material in a multi-source microwave heating system,which aimed to achieve the optimization goal of minimizing the temperature field gradient in the presence of standing waves in the resonant cavity.Firstly,starting from the dynamic changes of microwave frequency,this work adopted the frequency shift method of alternating hot spots to reverse the temperature distribution of the material,achieved the neutralization of cold hot spots between the media,and achieved the goal of uniform heating.Then,based on the difference in the degree of coupling between different microwave sources,the chaos game optimization algorithm was introduced to reconstruct the value of the feed-in power of each microwave source at different frequencies,to improve the ove-rall temperature of the material under the condition of ensuring the unchanged temperature uniformity.Finally,a simulation example of the interaction between multi-source microwaves and SiC material was used to analyze the heating process and effectively calculate the uniformity index;The numerical calculations show that the proposed method improves the uniformity by 26.3%—70.2%and 60.0%—62.7%compared with the fixed-frequency heating and the swept-frequency heating,respectively,while the heating efficiency is improved by 2.5%—41.7%and 14.2%—14.6%,respectively,which verifies that the proposed method can effectively improve the temperature uniformity of microwave heating.

关 键 词：微波加热 多微波源 功频协同 热点交替 混沌博弈优化算法 均匀性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]