Improved disturbance observer design and its application

Author

Zhou, Ping ; Lu, Shao-Wen ; Dai, Wei ; Chai, Tian-You

Author_Institution

State Key Lab. of Synthetical Autom. for Process Ind., Northeastern Univ., Shenyang, China

fYear

2012

fDate

23-25 May 2012

Firstpage

3967

Lastpage

3972

Abstract

To improve the disturbance rejection performance of model predictive control (MPC) based feedback control system, this paper first presents an improved disturbance observer (IDOB) design method for the SISO nonminimum-phase delay system. Then, a compound control strategy is proposed to handle multivariable process with large process disturbances by combining the proposed IDOB and the MPC. At last, several simulations and comparisons have been performed to demonstrate the proposed control method for multivariable grinding circuit.

Keywords

delay systems; feedback; grinding; mineral processing; multivariable control systems; observers; predictive control; process control; IDO; MPC; SISO nonminimum-phase delay system; compound control strategy; disturbance rejection performance improvement; improved disturbance observer design; mineral grinding circuit system; model predictive control based feedback control system; multivariable grinding circuit; multivariable process; Control systems; Delay effects; Feeds; Low pass filters; Observers; Process control; Uncertainty; Disturbance Observer (DOB); Grinding Process; IDOB; Model Predictive Control; Nonminimum-Phase Multivariable Control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2012 24th Chinese

Conference_Location

Taiyuan

Print_ISBN

978-1-4577-2073-4

Type

conf

DOI

10.1109/CCDC.2012.6244632

Filename

6244632