NONLINEARITY ASSESSMENT OF CHEMICAL PROCESSES

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FAKHROLESLAM M.; BOZORGMEHRY BOOZARJOMEHRY R.; PAZHOOH F.

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Journal Paper

Paper Information

Journal: SCIENTIA IRANICA Year:2015 | Volume:22 | Issue:3 (TRANSACTIONS C: CHEMISTRY AND CHEMICAL ENGINEERING) Page(s): 967-980

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Information Journal Paper

Title

NONLINEARITY ASSESSMENT OF CHEMICAL PROCESSES

Author(s)

FAKHROLESLAM M. | BOZORGMEHRY BOOZARJOMEHRY R. | PAZHOOH F. | Issue Writer Certificate

Keywords

NONLINEAR SYSTEMS

NONLINEARITY MEASURE

CHEMICAL PROCESSES

SYSTEM IDENTIFICATION

Abstract

One of the most important issues in controller design and analysis of a nonlinear system is its degree of nonlinearity. Helbig et al. proposed a method in which the system, along with a linear reference model (which is the sum of a couple of first order transfer functions), is stimulated with a set of input patterns. The outputs of these systems are then compared and the nonlinearity measure of the system is obtained as the normalized difference between the outputs of these two systems. In this paper, the linear reference model is replaced with two simpler linear ones. The proposed method has been used for assessment of the nonlinearity measure of various nonlinear systems that are used as standard benchmarks by the nonlinear process control research community. The results show that, despite the use of this simpler model with less parameters, the calculated nonlinearity measure is almost similar to the one obtained by Helbig's method. Furthermore, the nonlinearity measure obtained by the proposed method can be calculated very much faster.

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APA: Copy

FAKHROLESLAM, M., BOZORGMEHRY BOOZARJOMEHRY, R., & PAZHOOH, F.. (2015). NONLINEARITY ASSESSMENT OF CHEMICAL PROCESSES. SCIENTIA IRANICA, 22(3 (TRANSACTIONS C: CHEMISTRY AND CHEMICAL ENGINEERING)), 967-980. SID. https://sid.ir/paper/290341/en

Vancouver: Copy

FAKHROLESLAM M., BOZORGMEHRY BOOZARJOMEHRY R., PAZHOOH F.. NONLINEARITY ASSESSMENT OF CHEMICAL PROCESSES. SCIENTIA IRANICA[Internet]. 2015;22(3 (TRANSACTIONS C: CHEMISTRY AND CHEMICAL ENGINEERING)):967-980. Available from: https://sid.ir/paper/290341/en

IEEE: Copy

M. FAKHROLESLAM, R. BOZORGMEHRY BOOZARJOMEHRY, and F. PAZHOOH, “NONLINEARITY ASSESSMENT OF CHEMICAL PROCESSES,” SCIENTIA IRANICA, vol. 22, no. 3 (TRANSACTIONS C: CHEMISTRY AND CHEMICAL ENGINEERING), pp. 967–980, 2015, [Online]. Available: https://sid.ir/paper/290341/en

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