基于模糊PID的茶叶烘干机恒温控制系统研究  

Research on control system of tea constant temperature drying machine based on fuzzy PID

作　　者：吴晓强[1] 李亚莉[2] 周红杰[2] 赵永杰 

机构地区：[1]内蒙古民族大学机械工程学院,内蒙古通辽028000 [2]云南农业大学普洱茶学院,云南昆明650201 [3]昆明铁道职业技术学院,云南昆明650208

出　　处：《食品与机械》2015年第4期111-113,255,共4页Food and Machinery

基　　金：国家自然科学基金项目(编号:31260197);国家科技支撑计划项目课题(编号:2007BAD58B02)

摘　　要：目前茶叶用烘干机的燃煤热风炉存在能耗高、热效率低的问题,而且大多采用人工控制,温度稳定性差,品质也难以保证。为此,采用模糊控制技术对热风温度进行恒温控制,根据热风炉热风温度的高低,通过变频器自动调节热风炉的排烟量,控制热风温度达到恒定,在满足烘干需要的同时,减小能量损耗,保证茶叶品质。同时,应用MATLAB软件对模糊PID恒温控制系统进行仿真。结果表明,该系统可以有效控制热风温度,达到恒温控制的目的。The tea with a coal stove drying machine has high energy consumption, low thermal efficiency problems, mostly adopts manu- al control, causes the tea drying temperature is not stable, and effect of tea quality stability. Therefore, by using fuzzy control technology to control the temperature of hot air, according to the temperature of hot air from blast furnace, flue gas quantity is adjusted automatically through the inverter, to control hot temperature reaches a constant, to meet the need of drying at the same time, reduce the energy con- sumption, and ensure the quality of tea. Finally, the of fuzzy PID temperature control system is simulated by of MATLAB software, the results show that the system can effectively control the tempera ture of hot air, the temperature control of the objective.

关 键 词：茶叶烘干机 恒温控制 模糊PID 变频技术 仿真 

分 类 号：TS272.3[农业科学—茶叶生产加工]