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- Title
Event-triggered robust H<sub>∞</sub> control for uncertain networked control systems with time delay.
- Authors
Shen, Yubin; Fei, Minrui; Du, Dajun; Peng, Chen; Tian, Yu-Chu
- Abstract
H∞ control for networked control systems with exogenous disturbances and norm-bounded parameter uncertainties has been extensively investigated. However, how to better use the limited network capacity and computation resources while reducing the conservativeness of the H∞ control is still not fully understood. This paper presents a new dynamic discrete event-triggered scheme with improved modelling and control design to tackle this problem. The event-triggering is designed with periodic data sampling, and consequently the closed-loop system is formulated as a unified time-delayed model with the sampled data. From this model, an augmented Lyapunov–Krasovskii functional is constructed with triple-integral terms. A new free-weight matrix technique and the Wirtinger-based inequality are utilized over the Lyapunov–Krasovskii functional to derive a less conservative controller. This leads to two delay-range-dependent stability criteria in terms of linear matrix inequalities. Integrating all these components forms a co-design method for the minimum H∞ performance index and our event-triggered scheme. Simulation experiments are conducted to demonstrate the approach presented in this paper.
- Subjects
AUTOMATIC control systems; TIME delay systems; LYAPUNOV exponents; INTEGRALS; MATRIX inequalities
- Publication
Transactions of the Institute of Measurement & Control, 2018, Vol 40, Issue 9, p2928
- ISSN
0142-3312
- Publication type
Article
- DOI
10.1177/0142331217714305