TY - JOUR
T1 - Observer-based scheme for the control of high order systems with two unstable poles plus time delay
AU - Novella Rodríguez, David Fernando
AU - Del Muro-Cuéllar, Basilio
AU - Sename, Olivier
PY - 2014
Y1 - 2014
N2 - This paper deals with the problem of the stabilization and control of linear time invariant high order systems with two unstable real poles plus time delay. A simple observer-based controller is designed in order to achieve a stable behavior of the closed-loop system. Necessary and sufficient conditions for the existence of the proposed control structure are stated. Hence, only four proportional gains and the model of the plant are enough to obtain a stable response of the delayed system. Moreover, a robustness analysis is presented in order to compute the maximal uncertainty bound accepted for the delay term. In addition, a two degree of freedom proportional-integral control action is implemented in order to track step references and to reject step disturbances. The achieved performance of the proposed control strategy is illustrated by mean of numerical simulations.
AB - This paper deals with the problem of the stabilization and control of linear time invariant high order systems with two unstable real poles plus time delay. A simple observer-based controller is designed in order to achieve a stable behavior of the closed-loop system. Necessary and sufficient conditions for the existence of the proposed control structure are stated. Hence, only four proportional gains and the model of the plant are enough to obtain a stable response of the delayed system. Moreover, a robustness analysis is presented in order to compute the maximal uncertainty bound accepted for the delay term. In addition, a two degree of freedom proportional-integral control action is implemented in order to track step references and to reject step disturbances. The achieved performance of the proposed control strategy is illustrated by mean of numerical simulations.
KW - Observer Based Controller
KW - Time Delay
KW - Unstable Process
UR - http://www.scopus.com/inward/record.url?scp=84899114990&partnerID=8YFLogxK
U2 - 10.1002/apj.1757
DO - 10.1002/apj.1757
M3 - Artículo
SN - 1932-2135
VL - 9
SP - 167
EP - 180
JO - Asia-Pacific Journal of Chemical Engineering
JF - Asia-Pacific Journal of Chemical Engineering
IS - 2
ER -