Ball Mill Grinding Circuit Based on MPC and EID
作者单位：College of Physics and Electronic InformationAnhui Normal University
会议名称：《第37届中国控制会议》
会议日期：2018年
基 金：supported by National Natural Science Foundation (NNS-F) of China under Grant 61503003 Major University Program of Anhui Natural Science Foundation under Grant KJ2018ZD032 Key University Program of Anhui Natural Science Foundation under Grant KJ2015A015
关 键 词：Ball mill grinding process Model predictive control Equivalent input disturbance Disturbance rejection
摘 要：Design of stable system for grinding circuit is very important to reduce energy losses and recover the valuable minerals. In order to achieve satisfactory performance in controlling complex process operation in the presence of heavy disturbances and large uncertainties, equivalent input disturbance（EID） approach is used to design the controller of ball mill grinding process. EID estimates an equivalent disturbance of grinding circuit on the control input channel, and it integrates this disturbance directly into the control law so as to suppress disturbances promptly and effectively. MPC has been researched and applied widely as one of the multi-variable control algorithms in grinding field. It is used to decouple in real time. In this paper, MPC-EID hybrid control is used to control the grinding circuit. Simulation results demonstrate that while controlling the ball mill grinding circuit, the MPC combined with EID possesses a better performance in disturbance rejection and rapid response. The controlled variable can run stable along the set value.