Abstract
This paper presents an optimized algorithm for event-triggered control (ETC) of networked control systems (NCS). Initially, the traditional backstepping controller is designed for a generalized nonlinear plant in strict-feedback form that is subsequently extended to the ETC. In the NCS, the controller and the plant communicate with each other using a communication network. In order to minimize the bandwidth required, the number of samples to be sent over the communication channel should be reduced. This can be achieved using the non-uniform sampling of data. However, the implementation of non-uniform sampling without a proper event triggering rule might lead the closed-loop system towards instability. Therefore, an optimized event triggering algorithm has been designed such that the system states are always forced to remain in stable trajectory. Additionally, the effect of ETC on the stability of backstepping control has been analyzed using the Lyapunov stability theory. Two case studies on an inverted pendulum system and single-link robot system have been carried out to demonstrate the effectiveness of the proposed ETC in terms of system states, control effort and inter-event execution time.
Highlights
In recent years, event-triggered control (ETC) has become a prominent topic of research due to the benefits offered by it as compared to the networked control system (NCS)
This paper presented an ETC scheme for an NCS
A backstepping control law was designed for a nonlinear system in strict-feedback form
Summary
Event-triggered control (ETC) has become a prominent topic of research due to the benefits offered by it as compared to the networked control system (NCS). The analog-to-digital (A/D) and digital-to-analog (D/A) conversion of the plant data is essential in the NCS to make the plant and controller signals compatible with the communication channel. This further needs the sampling and hold circuit for the plant data. Periodic sampling utilizes a fixed bandwidth on the communication channel and was preferred in the past for implementing the NCS. In several control applications (e.g., chemical processes which take a longer time to settle), it is not needed to send the output data of the plant to the controller at fixed time intervals
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
