Comments on "H-infinity robust control for multi-time delay systems"
关于“多时滞系统H∞鲁棒控制”一文的商榷

Paper "H-infinity, robust control for multi-time delay systems" proposed a method of designing H-infinity state feedback controller. Furthermore, the above literature gave a necessary and sufficient condition for a Riccati inequality with parameter pertur-bances to have robustness. However, there are some serious mistakes in the proof of the literature. Here, the authors pointed out these mistakes and gave the corresponding modification. Additional, the authors discussed the uncertainties.