Nonlinear Control of Forced-Circulation Evaporator via Inverse System Method

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Nonlinear Control of Forced-Circulation Evaporator via Inverse System Method

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[1]LIU Ai ling,MA Huan,Ql Shu kang.Nonlinear Control of Forced-Circulation Evaporator via Inverse System Method[J].Journal of Zhengzhou University (Engineering Science),2015,36(04):24-27.[doi:10.3969/j.issn.1671-6833.2015.04.006]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 36 Number of periods: 2015 04 Page number: 24-27 Column: Public date: 2015-08-31

Title:: Nonlinear Control of Forced-Circulation Evaporator via Inverse System Method

Author(s):: LIU Ai ling1; MA Huan2; Ql Shu kang1; 1. Department of Educational Administration，Zhengzhou University , Zhengzhou 450001 , China; 2.School of Software , Zheng-zhou University of Light Industry , Zhengzhou 450001 , China; 3.School of Eletrical Engineering , Zhengzhou University , Zheng-zhou 450001 ,China

Keywords:: forced-circulation evaporator; inverse system method; feedback linearization; decoupling; opti-mal control

CLC:: TQ245 TP273

DOI:: 10.3969/j.issn.1671-6833.2015.04.006

Abstract:: Forced-circulation evaporators (FCE) are typical muli-input multi-output strong coupling nonlinearsystems and the conventional linear system controller cannot guarantee the high performance of the system. Inthis paper,a nonlinear dynamic model was constructed based on the analysis of the construction and engineering process of FCEs. Then,with the inverse system method,a state feedback controller was proposed to real-ize the linearization and decoupling. Finally , for the obtained pseudolinear system,an optimal controller wasput forward. The simulation results showed that compared to the conventional PID controller,the proposednonlinear controller can effectively improve the dynamic performance of FCEs

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