基于模糊控制的高温热泵果脯干燥系统设计  

Design of high temperature heat pump dried fruit drying system based on fuzzy control

作　　者：孙乐平 郭小璇[1] 韩帅[1] 郭敏 SUN Le-ping;GUO Xiao-xuan;HAN Shuai;GUO Min

机构地区：[1]广西电网公司电力科学研究院,广西南宁530023

出　　处：《节能》2024年第5期98-102,共5页Energy Conservation

基　　金：广西重点研发计划(项目编号:2021AB38037);广西电网公司科技项目(项目编号:GXKJXM20200428)。

摘　　要：针对高温热泵干燥技术替代传统蒸汽或热风干燥在果脯烘干中的应用场景,研制高温热泵干燥系统。结合热交换器结构与换热特性,分析果脯干燥工艺特点,将模糊逻辑控制应用于热泵干燥过程;考虑干燥箱的热场分布、温度梯度控制与干燥时间的耦合,对模糊控制器、模糊规则表进行详细设计,采用可编程逻辑控制器(PLC)控制的热泵干燥控制系统进行龙眼干燥实验测试。结果表明,模糊控制具有良好的稳态和瞬态性能,具有温度调节快、误差小、干燥效率高、节能效果好等优势,适用于干燥工艺复杂、温度调节要求高、减少人为干预影响品质的果蔬类农产品深加工。Aiming at the application scenario of high-temperature heat pump drying technology replacing traditional steam or hot air drying in preserved fruit drying,a high-temperature heat pump drying system was developed.Combined with the structure of the heat exchanger and the heat exchange characteristics,the characteristics of the preserved fruit drying process were analyzed,and the fuzzy logic control was applied to the heat pump drying process.Considering the coupling of the thermal field distribution,temperature gradient control and drying time of the drying oven,the fuzzy controller and fuzzy rule table were designed in detail,and the heat pump drying control system controlled by programmable logic controller(PLC)was used to carry out the experimental test of longan drying.The results show that the fuzzy control has good steady-state and transient performance,and has the advantages of fast temperature regulation,small error,high drying efficiency and good energy-saving effect,and is suitable for the deep processing of fruit and vegetable agricultural products with complex drying process,high temperature regulation requirements,and reduced human intervention affecting the quality.

关 键 词：高温热泵 果脯干燥 温度控制 模糊控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]