via Taylor series. Int J Syst Sci，1987,18(7):1347-1353.
[24] Chen C K，Yang C K. Analysis and parameter indentification of time-delay system
     via polynomal series. Int Control，1987，46(1):111-127
[25] Belkoura L, Richard J P. A distribution framework for the fast identification
     of linear systems with delays[C].6th IFAC workshop on time delay systems. 2006.
[26] Rudolph J, Woittennek F. An algebraic approach to parameter identification in
 linear infinite dimensional systems[C].Control and Automation, 2008 16th
 Mediterranean Conference on. IEEE, 2008: 332-337.
[27] 石贤良，吴成富.基于MATLAB的最小二乘法参数辨识与仿真[J].西安工业大学，    2005.(6):44-46.
[28] Belkoura L, Orlov Y.Identifiability analysis of linear delay-differerbtial
     system[C].IMA J. Of Mathematical Control and Information, 19 ,73-81.
[29] Morse,A.S. Ring models for delay differential systems. Automatica[C],12,529
     –531.
[30] Diop,S.,Kolmanovsky,I.,Moraal,P.,&vanNieuwstadt,M.Preserving stability/    
     performance when facing an unknown time delay. Control Eng. Practice, 2001 (9),   1319-1325. 系统辨识文献综述和参考文献(3):http://www.751com.cn/wenxian/lunwen_26147.html