Combined networked switching output feedback control with -region stability for performance improvement

Abstract

In this article, a combined networked switching output feedback control scheme, with a -region stability performance improvement module is presented. The network induced time delays, that are considered to be time varying and integer multiples of the sampling period, are being embedded in the system model, by state augmentation. The resulting model of the overall networked closed-loop system is switching, with the current measured round-trip time delay acting as the switching rule. Based on this modelling approach, a Linear Matrix Inequality (LMI) tuned switching output feedback controller is designed. The proposed approach establishes robustness against time delays and is able to guarantee the overall stability of the switching closed-loop system. Integrated in the controlled synthesis phase, an LMI tuned performance improvement module is being introduced, based on -region stability. Multiple simulation results are being presented that prove the efficacy of the proposed scheme.

Keywords:

• networked controlled systems
• switching output feedback
• -region stability
• LMI