A comparative study of applying active-set and interior point methods in MPC for controlling nonlinear pH process
A comparative study of Model Predictive Control (MPC) using active-set method and interior point methods is proposed as a control technique for highly non-linear pH process. The process is a strong acid-strong base system. A strong acid of hydrochloric acid (HCl) and a strong base of sodium hydroxid...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Chemical Engineering Department, College of Engineering, Syiah Kuala University
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/56931/1/A%20comparative%20study%20of%20applying%20active-set%20and%20interior%20point%20methods%20in%20MPC%20for%20controlling%20nonlinear%20pH%20process.pdf http://psasir.upm.edu.my/id/eprint/56931/ http://www.jurnal.unsyiah.ac.id/RKL/article/view/2168 |
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| Summary: | A comparative study of Model Predictive Control (MPC) using active-set method and interior point methods is proposed as a control technique for highly non-linear pH process. The process is a strong acid-strong base system. A strong acid of hydrochloric acid (HCl) and a strong base of sodium hydroxide (NaOH) with the presence of buffer solution sodium bicarbonate (NaHCO3) are used in a neutralization process flowing into reactor. The non-linear pH neutralization model governed in this process is presented by multi-linear models. Performance of both controllers is studied by evaluating its ability of set-point tracking and disturbance-rejection. Besides, the optimization time is compared between these two methods; both MPC shows the similar performance with no overshoot, offset, and oscillation. However, the conventional active-set method gives a shorter control action time for small scale optimization problem compared to MPC using IPM method for pH control. |
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