TY - GEN
T1 - Suppression of Disturbances in Networked Control Systems with Time-Varying Delay Based on Equivalent-Input-Disturbance Approach
AU - Li, Meiliu
AU - She, Jinhua
AU - Liu, Zhentao
AU - Zhang, Chuanke
AU - Wu, Min
AU - Ohyama, Yasuhiro
AU - Chen, Xinkai
N1 - Funding Information:
This work was supported by the National Key R&D Program of China under Grant 2017YFB1300900; by the National Natural Science Foundation of China under Grants 61873348 and U1813201; by the 111 Project, China under Grant B17040; and by the Hubei Provincial Natural Science Foundation, China under Grant 2015CFA010. Corresponding author: J. She, she@stf.teu.ac.jp.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - A plant is controlled remotely on a network for a networked control system. Disturbances from the network and surroundings may deteriorate the control performance of such a system. To solve this problem, this paper presents a new method of suppressing an exogenous disturbance for those control systems. The control system has a state observer to estimate the state of the plant and an equivalent-input-disturbance (EID) estimator to produce an estimate of the disturbance on the control input channel in a real-time fashion. The system is divided into two subsystems for the analysis of system stability. A stability condition of the control system with a time-varying delay is presented in terms of a linear matrix inequality. Simulations demonstrate the validity of the method. And a comparative study shows the superior of our method to a conventional Smith-EID control method.
AB - A plant is controlled remotely on a network for a networked control system. Disturbances from the network and surroundings may deteriorate the control performance of such a system. To solve this problem, this paper presents a new method of suppressing an exogenous disturbance for those control systems. The control system has a state observer to estimate the state of the plant and an equivalent-input-disturbance (EID) estimator to produce an estimate of the disturbance on the control input channel in a real-time fashion. The system is divided into two subsystems for the analysis of system stability. A stability condition of the control system with a time-varying delay is presented in terms of a linear matrix inequality. Simulations demonstrate the validity of the method. And a comparative study shows the superior of our method to a conventional Smith-EID control method.
KW - Networked control systems
KW - disturbance estimation
KW - equivalent input disturbance (EID)
UR - http://www.scopus.com/inward/record.url?scp=85084051390&partnerID=8YFLogxK
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U2 - 10.1109/IECON.2019.8927201
DO - 10.1109/IECON.2019.8927201
M3 - Conference contribution
AN - SCOPUS:85084051390
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 6957
EP - 6960
BT - Proceedings
PB - IEEE Computer Society
T2 - 45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Y2 - 14 October 2019 through 17 October 2019
ER -