参数变换

It is proved that the transient process is very sensitive to parasitic inductance of the equivalent circuit.

结果表明，变换器的开关暂态过程对主电路母线和电容组的寄生电感参数的变化非常敏感。

Finally, based on the characteristics of transient responses and the Morlet wavelet, a family of wavelet functions is introduced and used in the simulation of modal analysis.

文中分析了在众多小波基函数中Morlet小波更适合对动态结构系统进行模态分析的原因，结合Morlet小波的性质和结构系统对脉冲响应信号的特性，构造了一小波族，实现了利用Morlet小波变换对多自由度系统进行模态解耦和对时变系统进行模态参数辨识的方法。

The question of unbalance on PS PWM DC-DC FB converter is discussed, and the solution is proposed.

介绍了桥式变换器的不平衡问题及解决方法和参数确定。

In addition, the main part of the rectifier and filter circuit, power conversion and other sectors circuit is analyzed and given the parameters and options.

此外，分析了主电路部分的整流滤波、功率变换等环节，给出了参数计算和选择的方法。

The stratigraphic completeness was figured out, which improved the resolution of recognition of sequences; the fractal dimensions of log curves change abnormally at SBs and fs, being a good parameter in high-resolution sequence stratigraphic analysis and explanation of the complexity of geological background; the fixed vector and the transfer step of the probability matrix can be used in describing quantitatively the randomicity law of the evolution of stratigraphic accumulation, being helpful in analysis of sedimentary series.

测井序列的小波变换不仅可以直观方便地识别层序、准层序界面，而且，与FFT相结合进一步识别出其中的米氏旋回层，并计算出层段地层完整性，大大提高了层序识别分辨率；测井曲线的分形维数在测井层序界面及海泛面处有异常反映，是高分辨层序分析及地质背景复杂性解释的有效参数；固定向量和状态矩阵转移步数可定量描述沉积序列演化的随机规律性，是地层序列分析的辅助手段。

Then, the small signal model for flyback converter as well as its control scheme is developed and is used to optimize regulators parameters.

然后研究了反激变换器小信号特性并建立了系统的控制模型，根据控制模型对控制参数进行优化设计。

In this research, we find that because of the changes of parameters and structure in GNSS, the error origins are very different of them in foretime.

在研究中发现，由于GNSS系统本身参数和结构改变，加上坐标变换的问题，使得误差来源发生变化，导致原有误差公式不再适用。

Extract cochlear formant on the basis of auditory perception.

使用听觉感知的小波变换来提取电子耳蜗中的共振峰参数。

Fourier analysis consists of Fourier series which can solve limited one-dimensional space Heat-conduction question and Fourier integral which can solve infinite one-dimensional space Heat-conduction question. This is more systematic compared with the other methods, and embodies corresponding beauty of Mathematics to Physics.

傅里叶分析包括傅里叶级数和傅里叶积分，用傅里叶级数法解决有界细杆的热传导问题，用含参数的傅里叶变换法解决无界细杆的热传导问题，比其它方法更系统，体现出一种数学与物理对应的美感。

Based on this theory,and combined with Fourier transform frequency spectrum analysis and curve fitting ,the formula and arithmetic of equivalent mainfrequency for the frequency conversion measurement are derived.

本文正是基于这种变频法的思想，结合傅立叶变换频谱分析法和曲线拟合方法推导了介质损耗参数的工频等效计算公式和算法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。