Control of Nonlinear Process Using Soft Computing

The IUP Journal of Electrical & Electronics Engineering, Vol. 3, No. 1, pp. 66-79, January 2010

Posted: 21 Jan 2010

See all articles by S. Nithya

S. Nithya

SRM College of Engineering and Technology

N. Sivakumaran

National Institute of Technology (NIT)

T. K. Radhakrishnan

National Institute of Technology (NIT)

N. Anantharaman

National Institute of Technology (NIT)

Date Written: January 20, 2010

Abstract

A real-time control of a liquid level in a conical tank is taken for study. Control of liquid level in a conical tank is nonlinear due to variations in the area of cross section of the level system with height. System identification of this nonlinear process is done using both the Auto Regressive External (ARX) input model and the black box model, the latter identified to be nonlinear and approximated to be a First Order Plus Dead Time (FOPDT) model. Two controllers - Proportional Integral (PI) controller using Skogestad (2003) tuning rule and Fuzzy Logic Controller (FLC) - are developed for the control of liquid level in the conical tank. The real-time control of the above said process is implemented in MATLAB using ADAM’s data acquisition module. The performance of the two controllers is compared for various performance indices.

Keywords: Model identification, Nonlinear system, Data acquisition system, Fuzzy Logic Controller (FLC)

Suggested Citation

Nithya, S. and Sivakumaran, N. and Radhakrishnan, T. K. and Anantharaman, N., Control of Nonlinear Process Using Soft Computing (January 20, 2010). The IUP Journal of Electrical & Electronics Engineering, Vol. 3, No. 1, pp. 66-79, January 2010, Available at SSRN: https://ssrn.com/abstract=1539241

S. Nithya (Contact Author)

SRM College of Engineering and Technology ( email )

Trichy Campus
Tamil Nadu
India

N. Sivakumaran

National Institute of Technology (NIT) ( email )

Thiruchirapalli, 620015
India

T. K. Radhakrishnan

National Institute of Technology (NIT) ( email )

Thiruchirapalli, 620015
India

N. Anantharaman

National Institute of Technology (NIT) ( email )

Thiruchirapalli, 620015
India

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