The robustly stable or exponentially stable sufficient conditions which depend on the size of delay of systems are discussed for open loop systems by using linear matrix inequality(LMI) incorporated with algebraic value inequality(AVI) approach.

• 将线性矩阵不等式 ( LMI；linear matrix inequality)与数值不等式( AVI；algebraic value inequality)方法相结合给出了开环系统渐近稳定及其指数稳定的时滞相关条件 .