TY - GEN
T1 - Regulation of Biomass Concentration in Wastewater Treatment Systems under Measurement Delays
AU - Ramjug-Ballgobin, R.
AU - Busawon, K.
AU - Ah King, R. T.F.
AU - Rughooputh, H. C.S.
PY - 2020/11/25
Y1 - 2020/11/25
N2 - This paper proposes an observer-based control system to estimate and control biomass concentration in a simple microbial system under known output delays. More precisely, these delays are represented by time lags in the measurement of substrate concentration. We employ a feedback linearising controller that has previously been developed for a system without measurement delay. In the present work, the delay is applied to the controller and the maximum allowable delay that maintains stability is computed. Next, a nonlinear observer is proposed to predict the biomass concentration. The stability of the overall closed-loop feedback system incorporating the observer and the controller is analysed. Simulation study has revealed that the combination of the observer and controller provided a satisfactory response and was successful in regulating the biomass concentration. Finally some conclusions are drawn.
AB - This paper proposes an observer-based control system to estimate and control biomass concentration in a simple microbial system under known output delays. More precisely, these delays are represented by time lags in the measurement of substrate concentration. We employ a feedback linearising controller that has previously been developed for a system without measurement delay. In the present work, the delay is applied to the controller and the maximum allowable delay that maintains stability is computed. Next, a nonlinear observer is proposed to predict the biomass concentration. The stability of the overall closed-loop feedback system incorporating the observer and the controller is analysed. Simulation study has revealed that the combination of the observer and controller provided a satisfactory response and was successful in regulating the biomass concentration. Finally some conclusions are drawn.
KW - Biomass concentration
KW - Bioreactor
KW - Delayed measurements
KW - Maximum allowable delay
KW - Observer-based control
UR - https://www.scopus.com/pages/publications/85099589320
U2 - 10.1109/ELECOM49001.2020.9297027
DO - 10.1109/ELECOM49001.2020.9297027
M3 - Conference contribution
AN - SCOPUS:85099589320
T3 - 2020 3rd International Conference on Emerging Trends in Electrical, Electronic and Communications Engineering, ELECOM 2020 - Proceedings
SP - 1
EP - 5
BT - 2020 3rd International Conference on Emerging Trends in Electrical, Electronic and Communications Engineering, ELECOM 2020 - Proceedings
A2 - Pudaruth, Sameerchand
A2 - Mungur, Avinash
A2 - Ah King, Robert T. F.
A2 - Fowdur, Tulsi Pawan
A2 - Bojkovic, Zoran
A2 - Milovanovic, Dragorad
A2 - Hurbungs, Visham
PB - IEEE
T2 - 3rd International Conference on Emerging Trends in Electrical, Electronic and Communications Engineering, ELECOM 2020
Y2 - 25 November 2020 through 27 November 2020
ER -
