1　引　言线性连续和离散系统的鲁棒分析包括稳定鲁棒性与性能鲁棒性 ,主要方法有特征值分析、Lyapunov理论和矩阵测度方法 ,现已取得较大进展 .但现有结果未能建立连续和离散系统鲁棒性能之间的直接联系 .Delta算子是一种统一的描述形式 ,可以将连续和离散系统的许多结果纳入 1 INTRODUCTION Robust analysis of linear continuous and discrete systems includes stable robustness and robustness. The main methods include eigenvalue analysis, Lyapunov theory and matrix measure, but great progress has been made. However, the existing results can not be established The direct connection between the robustness of continuous and discrete systems. The Delta operator is a uniform form of description that incorporates many of the results of continuous and discrete systems into