SELF-ADJUSTING FILLING CONTROL SYSTEM FOR SELF-GRINDING DRUM MILLS
Datum
2022Autor
Novitskyi, Ihor
Novitskyi, I.
Novytskyi, Ihor
Sliesariev, V.
Новицький, Ігор
Слєсарєв, Володимир
Shevchenko, Yuliia
Shevchenko, Y.
Шевченко, Юлія
Metadata
Zur LanganzeigeZusammenfassung
Purpose of work is an improvement of the controlling efficiency for the processes of self-grinding ores in drum mills by using adaptive settings for the perimeters of the control part of the system.
Methodology. For the self-grinding process, the degree of filling of the mill drum is a critical
technological variable, i.e. this parameter not only has a direct impact on the efficiency of the grinding
unit in terms of the newly formed finished product, but also determines the trouble-free operation of
the mill. It is known from the referenced literature that during the decay time of the autocorrelation
function for the processes of original ore’s main characteristics change is on the order of several hours
or more. At the same time, the inertia of the crushed aggregate is measured in tens of minutes. Under
such conditions, one should assume that quasi-stationarity and the rational use of the control system
for a wide scope of self-grinding take place. Research results. Using the method of auxiliary operators, the law for setting the parameters of
the main circuit of the self-adjusting system was generated, and the block diagrams of the adaptive
control system for filling ore self-grinding mills were determined. The transient processes in the control system are calculated, which proves the expediency and effectiveness of the proposed approach. Scientific novelty. A new approach is proposed using an adaptive control system to regulate the
degree of filling of autogenous ores mills, based on the use of the method of auxiliary operators.
Practical significance. While calculating the tuning processes in the control system for the filling
degree of the mill, it wasfound that even with a simultaneous abrupt change in the object’s parameters
K0, T1 ,T2 to the maximum value, the adaptive system completes tuning the parameters of the controller C1, C2, C3 for a time of about 230 ÷ 270 minutes, which indicates the practical feasibility and
effectiveness of this approach to control the filling level of ore self-grinding mills.