Department of Applied Analysis and Complex Dynamical Systems,
Kyoto University, Japan
Motivated by the widespread use of networked and/or embedded control systems, stability analysis problem is considered for sampled-data feedback control systems with uncertainly time-varying sampling intervals. In the first part the problem is cast into a robustness analysis problem, where the nominal part is a continuous-time FDLTI system and then the perturbation is a time-varying delay. It is shown that the IQC technique improves small-gain type results in the literature. In the second part of the talk, the problem is again cast to a robustness problem,but the related periodic sampled-data system is taken as the nominal part.
A stability analysis algorithm is developed based on the robustness against the variation of sampling intervals derived by the small-gain condition.