期刊
ELECTRONICS
卷 12, 期 19, 页码 -出版社
MDPI
DOI: 10.3390/electronics12194003
关键词
event-triggered mechanism; networked control system; network-induced delay; Wirtinger's-based integral inequality; reciprocally convex approach
This paper addresses the problem of reducing network delays and controller co-design in networked control systems (NCSs) through the use of a dual event-triggered mechanism (DETM). By reducing the amount of sampled data transmitted over the network and utilizing Lyapunov function, the network-induced delays in NCSs are effectively reduced while maintaining system stability.
To address the presence of network-induced delays in networked control systems (NCSs), a dual event-triggered mechanism (DETM) is used to investigate the problem of reducing network delays and controller co-design. Firstly, the DETM of the sensor-controller (SC) and the controller-actuator (CA) is adopted. By determining whether the sampled data meet the event-triggered threshold conditions for network transmission, we effectively reduce the sampled data transmitted over the network, which can reduce a network delay by reducing occupation of the network resources. Secondly, a dual event-triggered NCS model with a network-induced delay is developed, and a Lyapunov function including a DETM and network-induced delay is chosen. The functional upper limit of the Lyapunov function is estimated by combining the Wirtinger's-based integral inequality with the reciprocally convex approach. This results in a stability criterion for systems with low conservativeness and a controller co-design method for a DETM. Finally, the availability of this method was verified through a numerical example and case study.
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