TY - JOUR
T1 - Proportional-Integral Event-Triggered Control of Networked Systems With Unmatched Uncertainties
AU - Song, Jiliang
AU - Shi, Dawei
AU - Shi, Yang
AU - Wang, Junzheng
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - This article proposes a proportional-integral (PI) event-triggered control strategy for networked nonlinear systems subject to unmatched uncertainties. The influences of the unmatched uncertainties and external disturbances on the output channel are attenuated by an extended-state-observer-based output feedback controller through a state transformation. The outputs of the controller are transmitted in an event-triggered fashion by comparing the difference between the current sampling error and its integration with respect to time. We prove the stability of the closed-loop event-triggered control system by regulating the trajectories of the observation and tracking errors into a compact set. Further, the relationships between the control performance and designed parameters are investigated quantitatively. In addition, Zeno-freeness is guaranteed by proving the existence of a nonzero minimum inter-event time. Finally, the effectiveness of the proposed PI-type event-triggered control strategy in reducing signal transmission rate is validated through numerical examples and various experiments.
AB - This article proposes a proportional-integral (PI) event-triggered control strategy for networked nonlinear systems subject to unmatched uncertainties. The influences of the unmatched uncertainties and external disturbances on the output channel are attenuated by an extended-state-observer-based output feedback controller through a state transformation. The outputs of the controller are transmitted in an event-triggered fashion by comparing the difference between the current sampling error and its integration with respect to time. We prove the stability of the closed-loop event-triggered control system by regulating the trajectories of the observation and tracking errors into a compact set. Further, the relationships between the control performance and designed parameters are investigated quantitatively. In addition, Zeno-freeness is guaranteed by proving the existence of a nonzero minimum inter-event time. Finally, the effectiveness of the proposed PI-type event-triggered control strategy in reducing signal transmission rate is validated through numerical examples and various experiments.
KW - Extended state observer (ESO)
KW - output feedback control
KW - proportional-integral (PI) event-triggered control (ETC)
KW - unmatched uncertainties
UR - http://www.scopus.com/inward/record.url?scp=85115687763&partnerID=8YFLogxK
U2 - 10.1109/TIE.2021.3112997
DO - 10.1109/TIE.2021.3112997
M3 - Article
AN - SCOPUS:85115687763
SN - 0278-0046
VL - 69
SP - 9320
EP - 9330
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 9
ER -