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非线性振动系统中的运动形式有三种可能：周期运动、拟周期运动和混沌·用Ｐｏｉｎｃａｒé映射可确定出系统周期运动，用谐波小波变换可区分拟周期运动和混沌·由此可准确地确定出参数空间中各种不同形式运动所对应的存在域·
There are three possible types of motion in a nonlinear vibration system: periodic motion, quasi-periodic motion, and chaos. Periodic motion of the system can be determined using Poincaré mapping, and quasiperiodic motion and chaos can be distinguished using harmonic wavelet transform. This makes it possible to accurately determine Existence domains corresponding to various forms of motion in the parameter space