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Comparative Study on Different IMC based Controller for a Nonlinear pH Neutralization Process


Affiliations
1 Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry, India
2 Department of Electronics and Instrumentation Engineering, Pondicherry Engineering College, Pondicherry, India
     

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There are significant research interests in the pH control problem because of its industrial importance and the fact that pH process is one of the most difficult challenges to control.  A control strategy based on internal model controller for (hydrochloric acid and sodium hydroxide) pH neutralization process has been developed by identifying its second order transfer function.  Here, the flow rate of acid is kept constant and base flow rate is varied by using controller design based on internal model control strategy. The process of identifying the system model based on the mass balance equation is presented.  The comparative study on IMC with filter for different lambda, IMC-PID for different lambda and PI controller are presented. The validated result are evaluated on the basis of the simulation carried on pH neutralization process.

Keywords

Internal Model Control, IMC with Filter, IMC-PID, pH Neutralization Process.
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  • Comparative Study on Different IMC based Controller for a Nonlinear pH Neutralization Process

Abstract Views: 251  |  PDF Views: 2

Authors

M. Nandhini
Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry, India
M. Florance Mary
Department of Electronics and Instrumentation Engineering, Pondicherry Engineering College, Pondicherry, India
R. Ananda Natarajan
Department of Electronics and Instrumentation Engineering, Pondicherry Engineering College, Pondicherry, India

Abstract


There are significant research interests in the pH control problem because of its industrial importance and the fact that pH process is one of the most difficult challenges to control.  A control strategy based on internal model controller for (hydrochloric acid and sodium hydroxide) pH neutralization process has been developed by identifying its second order transfer function.  Here, the flow rate of acid is kept constant and base flow rate is varied by using controller design based on internal model control strategy. The process of identifying the system model based on the mass balance equation is presented.  The comparative study on IMC with filter for different lambda, IMC-PID for different lambda and PI controller are presented. The validated result are evaluated on the basis of the simulation carried on pH neutralization process.

Keywords


Internal Model Control, IMC with Filter, IMC-PID, pH Neutralization Process.