增量谐波平衡方法(IHB)是一种有效的定量分析方法，既适用于分析弱非线性振动系统，也适用于分析强非线性振动系统，并且可以提高周期解的精度-Incremental harmonic balance method (IHB) is an effective method for quantitative analysis, both for the analysis of weakly nonlinear vibration system, also suitable for the analysi