Synthesis of the noise immune algorithm for adaptive control of ore concentration

Abstract

Consideration of the transient process characteristics under current industrial conditions, i.e. a controlled object’s static and dynamic characteristics when forming controlling impacts in automatic control systems of ore grinding and sizing is one of the advanced ways to increase their efficiency. Variations in characteristics of initial materials and equipment conditions while changing a command value in closed-loop automatic control systems (ACS) result in transient processes when the granularmetric composition of output products of grinding and sizing aggregates change in a wide range. It leads to additional losses of the recovered grade. Duration of transient processes depends on how the controlled object’s current condition (its static and dynamic characteristics) corresponds to the controller’s adjustment in the ACS. It causes the necessity to readjust the controller’s parameters from time to time that is done in the adaptive ACS to the best advantage. The authors suggest an algorithm of noise immune correction of the controller’s parameters in the closed-loop automatic control system, which is based on preliminary identification of the controlled object’s static and dynamic characteristics in accordance with parameters of the transient process starting in the closed-loop ACS of the transient process. There are determined limits to its applicability at concentration plants.