Event-triggered decentralised control for large-scale systems with actuator failures

ABSTRACT

This paper investigates the trajectory tracking problem for large-scale nonlinear systems in lower triangular form by employing the technology of static gain. For one thing, in the interest of improving the fault tolerance of the concerned system, a novel adaptive compensation method is considered in the tracking strategy for dealing with actuator failures. For another, in order to alleviate the communication burden and maintain satisfactory systems performance, the control method for handling event-triggered input is also added in the tracking strategy. Besides, this paper also proves that the designed strategy can achieve the control goal for large-scale nonlinear systems with bounded disturbance. The simulation example of the machine feed system is given to verify the validity of the proposed strategy.

Keywords:

• Large-scale nonlinear systems
• static gain
• actuator failures
• event-triggered input

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by National Natural Science Foundation of China [61973189, 62073190, 61873334], and the Research Fund for the Taishan Scholar Project of Shandong Province of China [ts20190905].

Notes on contributors

Fei Zhu

Fei Zhu is a present master student with the School of Control Science and Engineering, Shandong University, China. Her current research interests include nonlinear systems, and fault-tolerant control.

Xianfu Zhang

Xianfu Zhang received his MS degree in Mathematics from the School of Mathematics Sciences, Shandong Normal University, China, in 1999, and the PhD degree in Operational Research and Control from the School of Mathematics, Shandong University, China, in 2005. From 1999 to 2011, he worked in the School of Science, Shandong Jianzhu University, China. He joined the School of Control Science and Engineering, Shandong University, China, in 2012, where he is currently a professor. From September 2008 to February 2009, he was a visiting scholar in the Department of Mechanical Engineering, Ecole Polytechnique de Montreal, Canada. From November 2009 to February 2010, and from July 2012 to October 2012, he was a research assistant in City University of Hong Kong, Hong Kong. His main research interests include nonlinear systems, fractional-order systems, and time-delay systems. He received the Prize of Shandong Natural Science in 2017, and he was recognized as the Taishan Scholar Distinguished Professor of Shandong Province in 2019.

Hanfeng Li

Hanfeng Li received the BS degree in Mathematics from the School of Mathematics Sciences, Shandong Normal University, China, in 2016. He is currently pursuing the PhD degree with the School of Control Science and Engineering, Shandong University, China. His current research interests include nonlinear control systems, time-delay systems, and fault-tolerant control.