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Disturbance observer–based dynamic optimal setting control scheme for processes with nonlinear loops
Author(s) -
Yin Liping,
Zhu Pengwei
Publication year - 2019
Publication title -
optimal control applications and methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.458
H-Index - 44
eISSN - 1099-1514
pISSN - 0143-2087
DOI - 10.1002/oca.2536
Subject(s) - control theory (sociology) , nonlinear system , pid controller , controller (irrigation) , scheme (mathematics) , set (abstract data type) , optimal control , control (management) , engineering , control engineering , mathematical optimization , computer science , mathematics , temperature control , mathematical analysis , agronomy , physics , quantum mechanics , artificial intelligence , biology , programming language
Summary This paper is concerned with optimal operational control problems that exist in industries. The performance index is optimized by set points reselection on the operational control layer together with controllers design on the loop control layer. Firstly, the operational indices need to be obtained through some optimization algorithms. Secondly, the widely used PID controllers are adopted to achieve performance optimization in the ideal situation. To minimize performance deterioration caused by harmonic disturbances, the disturbance observer–based optimal setting control is proposed for those industrial processes with nonlinear loops. In the proposed method, the controller structure or parameter is never changed, which is accordant with actual industrial conditions. Finally, numerical simulations are given to demonstrate the effectiveness and convenience of the results.