Design of Temperature Control System for the Flue-cured Tobacco

摘要：

The tobacco-baking house temperature will seriously influence tobacco leaf quality, how to measure and control precisely the temperature in the house can be of real significance. The characteristic of hysteresis, nonlinearity and difficulty to acquire the precise mathematical model existing in the temperature control of the tobacco-baking house was researched. The control system includes SCM (AT89C52), temperature sensor, A/D converter circuit and corresponding circuit and interface, can make the temperature in the house measure and control accurately. The system hardware includes main circuit,velocity control circuit, audible and visual alarm circuit, watchdog circuit, clock circuit, keyboard and LCD circuit so on, which can achieve gathering, analyzing, comparing and controlling the tobacco-baking house temperature parameter. The program of control system includes the treatment and collection of temperature data, the dynamic display program, the fuzzy PID control system, the audible and visual alarm program, et al, and the systems main software, which includes initialization, key-press processing, display, and the fuzzy PID control program was analyzed. The results showed that the fuzzy PID control system makes the adjustment time of temperature decreased and the precision of temperature control improved, the quality of the tobacco leaf can achieve the expect results.

关键词： The flue-cured tobacco Temperature control Fuzzy control PID control

作者: ZHANG Fu FU Sanling

作者单位: College of Vehicle & Motive Power Engineering, Henan University of Science and Technology, Luoyang, College of Science, Henan University of Science and Technology, Luoyang, China

会议类型: 国际会议

会议名称: 2008 International Conference on IAEA(2008农业信息化、自动化与电气化国际会议)

会议地点: 镇江

会议语种:英文

页码: 450-453

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）