Intelligent control system for vertical mill based on fuzzy PID (proportion integration differentiation) algorithm

The invention relates to the technical field of control on production equipment, and particularly relates to an intelligent control system for a vertical mill based on a fuzzy PID (proportion integration differentiation) algorithm. The intelligent control system comprises the vertical mill, a dust remover and a feeding device, wherein the feeding device comprises an unloader, a bucket elevator and a storage bin; and the intelligent control system is characterized in that an air inlet in the bottom of the vertical mill is connected with a fan via a pipeline, a cold-air device and a hot-air stove are arranged on the pipeline between the air inlet and the fan, a cold-air adjusting valve and a hot-air adjusting valve are respectively arranged on the cold-air device and the hot-air stove, a vertical mill material layer PID controller is arranged on the feeding device, and an in-mill pressure difference fuzzy PID controller is arranged on the cold-air adjusting valve. According to the intelligent control system disclosed by the invention, mathematical models of the change of the vertical mill material layer thickness and an in-mill pressure difference along with parameters of a feeding amount, a mill inlet hot-air temperature and the like can be established only by inputting and outputting data without analyzing the complex grinding process of the vertical mill; and the intelligent control system is simple in process, high in adaptability, fast in the dynamic response time of a controller algorithm, high in robustness, high in control accuracy, and good in market prospect.