Comments on "Robust stabilization of a class of time-delay nonlinear systems"

The purpose of the above paper by Nguang (ibid. vol.45 (2000)) is to construct a robust memoryless state feedback controller for a class of uncertain time-delay systems with lower triangular structure, namely, strict feedback structure. However, there are some mistakes in the paper. The purpose of this note is to point out the mistakes and propose some suggestions to correct the mistakes. For simplicity, all the symbols in this note are the same as those in original paper.