利用标准Painlev6截断展开.引入一个完全和分离变量的函数.给出高阶Broer-Kaup-Kupershmidt系统的一个包含3个任意函数的简单Backlund变换.通过对任意函数的适当选取,给出该系统若干新的局域相干结构.
Based on the standard truncated Painleve expansion and by introducing a completely variable separation function,we get a simple Backlund transformation of the HBKK systems including three arbitrary functions. Starting from it,many new coherent structures of the HBKK systems are revealed.