Reset control of an industrial in-Line pH Process

Joaquín Carrasco; Alfonso Baños

doi:10.1109/TCST.2011.2157920

Reset control of an industrial in-Line pH Process

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Abstract

This work presents a reset/hybrid control application of an in-line pH process. The nonlinear process dynamic is linearized around different operating points, and as a result a second-order plus dead time plant with uncertain gain and delay is obtained for control purposes. A standard PI compensator and reset compensator are designed and tuned. The main aim of this work was to compare the performance of both compensators by practical experimentation. The results show the reset compensator is able to overcome fundamental limitations of linear and time invariant control with a faster tracking response and overall improvement in disturbance rejection. © 2012 IEEE.

Original language	English
Article number	5930334
Pages (from-to)	1100-1106
Number of pages	6
Journal	IEEE Transactions on Control Systems Technology
Volume	20
Issue number	4
DOIs	https://doi.org/10.1109/TCST.2011.2157920
Publication status	Published - 2012

Keywords

Dead time systems
impulsive system
in-line pH control
parametric ncertainty
pH process
reset control

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10.1109/TCST.2011.2157920

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abstract = "This work presents a reset/hybrid control application of an in-line pH process. The nonlinear process dynamic is linearized around different operating points, and as a result a second-order plus dead time plant with uncertain gain and delay is obtained for control purposes. A standard PI compensator and reset compensator are designed and tuned. The main aim of this work was to compare the performance of both compensators by practical experimentation. The results show the reset compensator is able to overcome fundamental limitations of linear and time invariant control with a faster tracking response and overall improvement in disturbance rejection. {\textcopyright} 2012 IEEE.",

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AB - This work presents a reset/hybrid control application of an in-line pH process. The nonlinear process dynamic is linearized around different operating points, and as a result a second-order plus dead time plant with uncertain gain and delay is obtained for control purposes. A standard PI compensator and reset compensator are designed and tuned. The main aim of this work was to compare the performance of both compensators by practical experimentation. The results show the reset compensator is able to overcome fundamental limitations of linear and time invariant control with a faster tracking response and overall improvement in disturbance rejection. © 2012 IEEE.

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KW - impulsive system

KW - in-line pH control

KW - parametric ncertainty

KW - pH process

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Reset control of an industrial in-Line pH Process

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Keywords

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