关键词: 烟叶复烤, 干燥区, 温度, 排潮率, 前馈解耦控制

Abstract: Tobacco re-drying is an important part in cigarette production. In the process of re-drying, temperature, moisture content directly impact tobacco index and follow-up procedure, including tobacco shred, packaging and so on. Tobacco drying area is a complicated multi-variable strong coupled system. In order to get better control effect, aiming at a tobacco re-drying factory in Yunnan, only controls temperature but not considers the humidity coupling, and its control effect is not good, so through collecting a large number of field data and obtaining the soft-sensing model of moisture eliminating rate and dynamic model of temperature-humidity in the drying zone, adopting the feedforward decoupling control method for temperature and moisture eliminating rate’s control simulation study. The simulation results show that the feedforward decoupling control of temperature and moisture eliminating rate in the drying zone has better control effect, compared with no decoupling PID control effect.

Key words: tobacco re-drying, drying area, temperature, moisture eliminating rate, feedforward decoupling control