Title: Output tracking control of pH neutralisation with iterative feedback tuning

Authors: Ruizi Ma; Guoshan Zhang

Addresses: School of Electrical Engineering and Automation, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072, China ' School of Electrical Engineering and Automation, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, 300072, China

Abstract: This paper proposes iterative feedback tuning (IFT) with flowrate convertor pH neutralisation control (IFTCNC) for the purpose of output tracking. A nonlinear controller which is tuned using IFT is presented for pH neutralisation process. A flowrate convertor is designed to estimate the acids flowrate reference input signal corresponding to the desired output pH value in the pH neutralisation process system. The effectiveness of iterative feedback tuning with convertor pH neutralisation control is verified in simulation and the results clearly exhibit the good output tracking performance.

Keywords: nonlinear control; iterative feedback tuning; IFT; output tracking control; pH neutralisation control; controller tuning; flowrate converter; simulation.

DOI: 10.1504/IJMIC.2016.074287

International Journal of Modelling, Identification and Control, 2016 Vol.25 No.1, pp.62 - 70

Received: 26 Sep 2014
Accepted: 24 Nov 2014
Published online: 21 Jan 2016 *

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