in this paper, based on the method of variable replacement, real parameters di > 0 ( i = 1, 2, . . ., n ) which can be adjusted, are introduced ingeniously . we establish some new sufficient conditions for the existence, uniqueness and global exponential stability of the equilibrium, periodic solution and almost periodic solution of neural networks with time-varying delays by means of the method of variation of parameters, fixed point theorem and some analysis techniques 本文巧妙地引入可調(diào)實參數(shù)d_i0(i=1,2,…,n),借助常數(shù)變易法、變量替換、不動點定理和一些分析技巧,對具可變時滯的神經(jīng)網(wǎng)絡的平衡點、周期解、概周期解的存在性和全局指數(shù)穩(wěn)定性建立了一些新的充分條件。