固有模态 meaning in English
natural mode of vibration
Examples
- Development and application of tmd structural vibration control
三维强化抛光振动台的理论建模与固有模态仿真研究 - Analyzed with the developed software , the stress and deformation distributions of f320 derrick and j250 / 42 - k derrick under several working conditions are obtained . the results obtained here are consistent with tha t obtained with supersap93 , which illustrates the program is correct and practicable . finally a fem pre - processor and post processor is developed
本论文用编制的程序分析了f320型和jj250 / 42 - k型石油钻机井架在几种工况下的应力、变形分布，及两种井架的固有模态、屈曲模态和可靠性，所得结果与supersap93的计算结果比较，应力和位移误差均相差很小，说明本程序系统是正确可行的。 - Secondly , hht that is one of the time - frequency representations ( tfrs ) is introduced in aspects of not only the theoretical analyses but also the programmer in matlab , including how to compute the instantaneous frequency , how to process the emd and how to dispose hilbert spectrum , after that bring forward the resolve to the problems during the processing of emd
其次,介绍了hht时频分析方法,包括理论分析与算法的matlab编程。其中从瞬时频率求解、经验模式分解和hilbert谱绘制几个方面分析了hht ,同时提出了经验模式分解过程中边缘处理和固有模态准则确定中存在的问题,并给出了解决方法,改善了hht的分析效果。 - Considering the factual partial discharge signals , the mid - signals can be produced by reducing the amplitude of noise in frequency region , which is decomposed with emd , and the intrinsic mode functions which contain the specific frequency can be obtained , then the partial discharge signals can be extracted by partly restructuring imf
对实际局部放电信号，在频域内降低其干扰的幅值后得到中间信号，然后对中间信号进行经验模态分解，得到包含特征频率的固有模态函数( imf ) ，接着对所得到的固有模态函数分量局部重构，从而提取出局部放电信号。