采用了模态变换和精细积分法，解决了考虑多阶模态的阻尼矩阵给求解所带来的困难。
To overcome the difficulties in the solving process brought by the multi-modal damping model, the modal transformation strategy and the precise time-integration method are applied.
应用这组线性无关的模态集构成坐标变换矩阵，推导出广义坐标下的部件动力学方程。
Using a coordinate transformation matrix, which is formed by these linearly independent mode set, the component equations of motion in generalized coordinates are derived.
经验模态分解方法中，有两种端点效应：在样条插值中以及在希尔伯特变换中。
There are two types of end effects in the empirical mode decomposition method: in the spline interpolation and in the Hilbert transform.
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