Active Disturbance Rejection Control of Chemical Processes

In this paper a novel control strategy, the active disturbance rejection control (ADRC), is applied to the representative process control problems. In the ADRC framework, the disturbance and unmeasured dynamics associated with chemical processes are treated as an additional state variable, which is...

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Bibliographic Details
Published in2007 IEEE International Conference on Control Applications pp. 855 - 861
Main Authors Zhongzhou Chen, Qing Zheng, Zhiqiang Gao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2007
Subjects
Aerospace control
Chemical processes
Control systems
Nonlinear dynamical systems
PD control
Pi control
Process control
Proportional control
State estimation
Three-term control
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ISBN9781424404421
1424404428
ISSN1085-1992
DOI10.1109/CCA.2007.4389340

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Summary:In this paper a novel control strategy, the active disturbance rejection control (ADRC), is applied to the representative process control problems. In the ADRC framework, the disturbance and unmeasured dynamics associated with chemical processes are treated as an additional state variable, which is then estimated and compensated for in real time. This reduces a normally complex, time-varying, nonlinear, and uncertain dynamic process to an approximately linear, time-invariant, cascade-integral form, where a simple proportional-derivative (PD) controller suffices. Simulation studies are performed on two nonlinear continuous stirred tank reactors (CSTR), both demonstrate very good performance in the absence of an accurate mathematical model of the process.
ISBN:9781424404421
1424404428
ISSN:1085-1992
DOI:10.1109/CCA.2007.4389340