Stability is one of the most active research areas in the framework of the analysis and control of dynamic systems. It is common that the mathematical models of dynamic complex systems are, in practice, imprecise due to uncertainties, parametric variations, nonmodeled dynamics and neglected terms in simplifications, among other reasons. Hence robust stability analysis of complex systems is essential for achieving results that more closely resemble real-world platforms.

Naturally, robust stability analysis leads to the design and tuning of robust controllers to improve the performance of complex systems such as robotic and mechatronic systems, time delay systems, chaotic systems, time varying systems, nonlinear systems, dynamic networks, fractional systems, and variable structure systems. The robust stability analysis of phenomena continues to give rise to interesting open problems that make it attractive to organize a special issue that attracts the attention of researchers interested in the subject and motivate them to present their contributions.

The aim of this special issue is to contribute to the development of new tools and advances in the framework of the stability and robust stabilization of complex systems, both in the theoretical part and in the novel application of these results. We welcome original research and review articles that contribute to and strengthen the aforementioned topics.

Potential topics include but are not limited to the following:

• Robust stability of fractional order complex systems
• Robust stability and control of time-delay complex systems
• Robust stability of switched complex systems
• Robust stability of robotic and mechatronic complex systems
• Robust stability of extended state observers-based controllers in complex systems