A hydraulic pump is considered as a pressure and flow ripple source for the hydraulic system, and its mathematical model in frequency domain is studied.
本文对液压系统中的流量压力脉动源一液压泵的频域数学模型作了研究。
It Outlines the fundamentals and the basic mathematical model of identifying modal frequency and damping by means of parameter identification with frequency domain and time domain.
简要介绍了用频域参数识别方法和时域参数识别方法识别模态频率和阻尼的基本原理和基本数学模型。
The frequency-domain analysis is accomplished by fast-Fourier transform analysis(FFTA)procedures and tested with a computergenerated mathematical model.
频域分析借助于快速富里叶变换分析（FFTA）过程，并用由计算机生成的数学模型进行测试。
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