TY  - JOUR
T1  - Daytime/Nighttime Event- Based PI Control for the pH of a Microalgae Raceway Reactor
A1  - Rodríguez-Miranda, Enrique
A1  - Beschi, Manuel
A1  - Guzmán, Jose Luis
A1  - Berenguel Soria, Manuel
A1  - Visioli, Antonio
JA  - Processes
Y1  - 2019
VL  - 7(5)
IS  - 247
M2  - doi: 10.3390/pr7050247
N2  - In this paper, a new solution to improve the traditional control operation of raceway microalgae reactors is presented. The control strategy is based on an event-based method that can be easily coupled to a classical time-driven proportional-integral controller, simplifying the design process approach. The results of a standard Proportional-Integral (PI) controller, as well as of two event-based architectures, are presented in simulation and compared with each other and with traditional On/Off control. It is demonstrated that the event-based PI controller—operating during the whole day instead of only during daytime—achieves a better performance by reducing the actuator effort and saving costs related to gas consumption.
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