Economic performance assessment of two ROM ore milling circuit controllers
Department of Electrical, Electronic and Computer Engineering, University of Pretoria, Pretoria, 0002, South Africa
Economic performance assessment of control systems is receiving increasing attention in both academia and industry. A relevant framework is proposed in Bauer and Craig (Bauer, M., Craig, I.K., 2008. Economic assessment of advanced process control - a survey and framework. Journal of Process Control 18 (1), 2-18) based on a comprehensive survey of the methods for economic analysis of advanced process control systems. The framework provides a formal procedure for the economic assessment of control systems. A practically motivated simulation study is used to cast the economic performance assessment of a nonlinear model predictive controller and three single-loop PID controllers for a run-of-mine milling circuit into this framework. Performance functions of the milling circuit, which dynamically relate the circuit process variables to monetary values, are developed based on a survey study on milling circuits and an in-depth literature study. © 2009 Elsevier Ltd. All rights reserved.
Advanced Process Control; Economic assessments; Economic performance; Grinding; Milling circuits; Mineral processing; Monetary value; Non-linear model; Performance functions; PID controllers; Process Variables; Simulation studies; Control system analysis; Controllers; Economic analysis; Electric network analysis; Flotation; Grinding (comminution); Grinding (machining); Intelligent control; Milling (machining); Minerals; Mining; Particle size; Proportional control systems; Silicate minerals; Surveys; Three term control systems; Process control