Dynamic Simulation and Model-based Control System Design for Comminution Circuits - Advanced Control and Supervision of Mineral Processing Plants - page 244

the controller decreases the ore feedrate in order to compensate for this disturbance.
This keeps mill operation at optimal conditions, as seen in Figure 5.21. Figure 5.22
shows that pebble flowrate and sump level stay within the pre-defined limits. The
percentage-of-solids control loop is able to cope with interactions and changes to
set-point, as seen in Figure 5.23.

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Figure 5.22 Optimizing controller: pebbles flowrate, sump level, pulp flowrate

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Figure 5.23 Optimizing controller: percentage of solids and water flowrate