access icon free Improved estimation on transmission intervals and delays for networked control systems using hybrid systems tools

© The Institution of Engineering and Technology
Received 19/06/2018, Accepted 10/04/2019, Revised 26/12/2018, Published 17/04/2019

The work studies the stability problem of networked control systems (NCSs) exposed to various imperfections, including scheduling protocols, transmission intervals, and delays by using hybrid systems tools. First of all, the above-mentioned NCSs are converted into hybrid control systems. Then under a weaker assumption, the authors construct a novel Lyapunov function to derive a less conservative sufficient condition for the uniform global asymptotic stability of the systems. Furthermore, they derive useful upper bounds for the maximum allowable transmission interval and maximum allowable delay, which significantly improve the existing results. Finally, some examples are presented to illustrate the effectiveness of the proposed theorem.

Inspec keywords: nonlinear control systems; networked control systems; time-varying systems; stability; asymptotic stability; Lyapunov methods; delays

Other keywords: uniform global asymptotic stability; above-mentioned NCSs; delays; networked control systems; improved estimation; hybrid control systems; work studies; transmission intervals; hybrid systems tools; maximum allowable transmission interval; stability problem; maximum allowable delay

Subjects: Control system analysis and synthesis methods; Stability in control theory; Nonlinear control systems

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