Abstract: Designing solutions in the silo quantitative automatic loading system, aiming at the improper selection of feeding valve closing time, There is contradiction between the precision and the efficiency in loading system.The system makes use of fuzzy control technology,on the statistics of the field measurement data and combined with operator experience into the control rules, making up fuzzy sets and fuzzy logic. Creating a friendly human-computer interaction (HCI) can reduce the operator's workload, improving the control precision and the efficiency of loading to achieve optimal fastest control.

Key words: Silo quantitative automatic loading system, Fuzzy control, Control precision, Influencing factors, Feeding valve