摘要：以一个新的扩展 Lorenz系统为背景，利用向量间的相似度改进了相空间重构所需的最优延迟时间的算法，并最终实现了该系统的相空间重构。数值结果表明改进后的算法是有效的，可能更好选择最优延迟时间。

Abstract: In the context of a new generalized Lorenz system,the algorithm of calculating the optimal delay time was improved by use of the tesemblance degree of vectors to achieve reconstruction of phase space of the system.The numerical results show that the improved algorithm is effectuive and the optimal delay time can be chosen effectively.