The Establish of Digital Simulation System on Continuous Cross-flow Dryer

Drying plays an important role in the post-harvesting process of grain, and the quality of the corn after drying has received an increasing concern. The mathematical model of grain drying plays an essential role in developing grain dryer structure and obtaining the drying technological parameters. Furthermore, an accurate mathematical model is a reference for automated control during drying process. In this paper, using mathematical models and quality model of the corn drying process, a digital simulation of corn drying machine system based on a virtual instrument was established for 5HSZ dryer. Finally, an on-line measurement and automated control software of grain parameters were developed providing the changes of moisture, temperature, humidity, and germination rate in the process of drying. The experimental results show that the simulation result is valid, which has practical merit of operation and technical optimization of dryer.