摘要: 利用从等离子体的实际问题引出的一些模型，研究了孤子、禁带孤波等相干结构，探索了非线性波动系统中的分岔、向混沌与湍流转变的现象、机制和控制问题． With models deduced from plasma systems, some phenomena in nonlinear wave systems are studied, such as solitons, gap solitary waves, bifurcations and transition to turbulence. The mechanism of bifurcations and control of chaos are also explored.