Event-based adaptive active disturbance rejection control for nonlinear large-scale systems with input delay

Abstract

This paper explores the active disturbance rejection control (ADRC) issue for interconnected large-scale systems with unmeasured states, input delay and a total disturbance composed of unknown constrained external disturbances. An enhanced extended state observer is built via fuzzy logic systems to identify system uncertainties and states and keep restraining the total disturbance of uncertain systems. When the triggering condition is met, the tracking differentiator component of the ADRC is able to reduce the communication overhead by successfully applying the backstepping control approach and the dynamic event-triggered mechanism. Meanwhile, the integral compensation method eliminates the negative effect cased by the input delay. Furthermore, the developed decentralised fuzzy control scheme can ensure that all signals in the closed-loop systems are semiglobally uniformly ultimately bounded and Zeno behaviour does not occurs. Finally, an example is used to depict the validity of the control approach.

Keywords:

• Active disturbance rejection control (ADRC)
• dynamic event-triggered mechanism
• extended state observer
• input delay
• interconnected large-scale systems

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

Additional information

Funding

This work was partially supported by the National Natural Science Foundation of China [grant numbers 62103108 and 62303179], the Basic Scientific Research Project of the Education Department of Liaoning Provincial [grant number LJKQZ20222437] and Innovation and Entrepreneurship Teaching Reform Research Project of Bohai University.