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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Jian-Chang Liu,Nan Chen,Xia Yu.Modified Two-Degrees-of-Freedom Internal Model Control for Non-Square Systems with Multiple Time Delays[J].Journal of Harbin Institute Of Technology(New Series),2014,(2):122-128.DOI:10.11916/j.issn.1005-9113.2014.02.018.
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Modified Two-Degrees-of-Freedom Internal Model Control for Non-Square Systems with Multiple Time Delays
Author NameAffiliation
Jian-Chang Liu School of Information Science and Technology, Northeastern University, Shenyang 110819, China 
Nan Chen School of Information Science and Technology, Northeastern University, Shenyang 110819, China 
Xia Yu School of Information Science and Technology, Northeastern University, Shenyang 110819, China 
Abstract:
A modified two-degrees-of-freedom (M-TDOF) internal model control (IMC) method is proposed for non-square systems with multiple time delays and right-half-plane (RHP) zeros. In this method, pseudo-inverse is introduced to design the internal model controller, and a desired closed-loop transfer function is designed to eliminate the unrealizable factors of the derived controller. In addition, set-point tracking and load-disturbance rejection of each process are separately controlled by two controllers. The simulation results show that in addition to high decoupling performance and robustness, the proposed control method also effectively improves load-disturbance rejection and simultaneously optimizes the input tracking performance and disturbance rejection performance by selecting the parameters of controllers. Furthermore, the higher tolerance of model mismatch is achieved in this paper.
Key words:  non-square system  two degrees of freedom  internal model control
DOI：10.11916/j.issn.1005-9113.2014.02.018
Clc Number:TP13
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