Vertical mill operation closed loop control device and method based on data excavation

Abstract

The invention discloses a vertical mill operation closed loop control device and method based on data excavation; the vertical mill operation closed loop control method comprises the following steps: using an integral characteristic screening method to excavate and parse condition data so as to obtain vertical mill health state evaluation indexes; carrying out cluster excavation analysis for the condition states so as to obtain characteristics of each condition cluster, thus obtaining various state distribution conditions in history conditions; defining operation state types in the history conditions, thus obtaining a stable mode condition database; using an ARIMA algorithm to using characteristic values determined in a vertical mill health state characteristic obtain unit to train a model, thus predicting parameter change trends, and using predicted values to assist state identification; combining with the predicted values given by the ARIMA model to determine the vertical mill operation state; reading condition records from the stable condition mode database when the vertical mill operation state is determined to be abnormal, thus obtaining recommended control object values; considering slag moisture and micro powder specific surface area detection results, carrying out closed loop control for controllable parameters at the moment, thus realizing long term stable operation of the vertical mill.

Description

technical field [0001] The invention relates to the field of slag grinding in the field of cement process industry, in particular to a closed-loop control device and method for vertical mill operation based on data mining. Background technique [0002] The vertical mill is a kind of equipment used to grind large particles of slag and other materials into fine particles. It mainly grinds waste slag produced in building materials, chemical industry, steel and other industries to realize the reuse of waste slag. The fine powder obtained by grinding is usually used as Raw materials for cement production. However, the process of slag grinding equipment is complicated, the working environment is harsh, and the long-term high-load operation. At the same time, the vertical mill raw material grinding process has the characteristics of strong coupling, nonlinearity, and large hysteresis, and there are physical and chemical changes. Establishing an accurate vertical mill It is difficu...

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Problems solved by technology

[0004] In the various models of the above-mentioned vertical mill raw meal grinding process, most researchers only explored the one-to-one relationship between the indicators in the vertical mill operation process and their influence on the vertical mill operation, but the vertical mill is a multi- A device with mutual affinity between variables, the variables affect each other, and the change of one index will affect other indexes, which will have a great impact on the overall operating state of the vertical mill

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