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- Title
Fractional PID Controller Applied to a Chemical Plant with Level and pH Control.
- Authors
Aguiar, Renato Aparecido; Franco, Ivan Carlos; Leonardi, Fabrizio; Lima, Fábio
- Abstract
One of the most important processes in the chemical, biological and petrochemical industries is the control of the potential of hydrogen (pH). As it is a multivariable process and non-linear, pH control gives rise to many challenges for designers in both dynamic responses and robustness issues. Despite all this complexity, in many circumstances pH control is performed by using a conventional proportional integral derivative (PID) control, which is very common in industry. This paper proposes using a fractional-order PID to improve the pH control performance of a lab-scale process, as it is more flexible, i. e., there is a higher number of variables to be adjusted. Results from a simulation have been compared to those from both conventional and fractional-order PID controls, which has shown the better performance of the latter related to important metrics such as the control effort and dynamic response of the controlled variables.
- Subjects
PID controllers; CHEMICAL plants; HYDROGEN; AUTOMATIC control systems; ENGINEERING instruments
- Publication
Chemical Product & Process Modeling, 2018, Vol 13, Issue 4, pN.PAG
- ISSN
1934-2659
- Publication type
Article
- DOI
10.1515/cppm-2018-0004