分析了模拟电压一频率比变换电路原理,给出了元件参数的设计要求及其计算方法。
After the analyses of circuit theory of analogue voltage-to-frequency ratio converter, the design requirement of component parameters and the calculation method are presented.
级联式BDC具有:两部分可分别优化设计、功率密度高、适于大变比变换的应用等优点。
The two-stage BDC has the advantages of ZVS switching, high power density, convenient to optimum design and convenient to modularize.
那是傅里叶变换美妙的部分,但对于某些信号处理应用来说,带状矩阵可以比傅里叶变换更加高效。
That s part of what makes Fourier wonderful. Nonetheless, for some signal-processing applications, banded matrices could prove more efficient than the Fourier transform.
那是傅里叶变换美妙的部分,但对于某些信号处理应用来说,带状矩阵可以比傅里叶变换更加高效。
That's part of what makes Fourier wonderful. "Nonetheless, for some signal-processing applications, banded matrices could prove more efficient than the Fourier transform."
持续变换的昆布冰川就像是一堆连续不断的从冰山墙上翻滚下来的冰块。”这张图片的摄影师鲍比·摩登说到。
The constantly shifting Khumbu Icefall is like a bunch of ice cubes continually tumbling down the icy mountain wall," said photographer Bobby Model about this image.
人们在经济低迷的时期所能享受到的物质快乐将会减少,所以人们更需要视觉上的满足感,而短发比长发更容易变换式样。
People enjoy fewer material pleasures in periods of recession, so want more visual pleasures, and there's more variation among short haircuts than long.
总之,在元组元素的运算上几乎同态问题比同态问题更复杂些,并且它扩充了范畴数据类型变换的应用范围。
In brief, almost-homomorphism is more difficult than homomorphism on the operation of the elements of tuple, and it extends the application area of CDT translation.
利用辛变换条件得到了一些新的切比雪夫多项式公式、三角恒等式和双曲恒等式。
In this paper by using the symplectic transformation condition, some new formulas including Chebyshev Polynomial, trigonometric identity, hyperbolic identity were obtained.
从理论上计算各个参数的设置范围,并且证明小波变换方法比FFT方法有较高的频率分辨率。
Calculates the setting range of each parameter in theory, and proves the method of wavelet transformation has higher frequency resolution than the method of FFT.
在第二章中,针对两组分和三组分混合体系分析问题提出了傅立叶变换平滑比光谱导数的新方法。
In chapter two, a new method which combines Fourier transform smoothing with ratio spectra derivative has been developed for analysis of binary or ternary mixtures.
实验表明该方法融合结果的均方误差比拉普拉斯金字塔算法和小波变换方法降低约30%- 60%。
The experimental results demonstrate that the MSE (mean square error) reduced by this proposed approach decreases 30% - 60% than that by Laplacian pyramid and discrete wavelet transform approaches.
压缩比达到了1.9以上,与其它超光谱图像压缩算法相当。位平面变换算法具有很好的并行性。
The compression ratio of algorithm is more than 1.9. The compression algorithm based on bit plane transform can be realized by parallel computing model.
测得的值与梯尺的尺度值比力,调动RIP洋的灰度变换弧线。
The value of the measured and wedges comparison of standard values, adjust the gray-scale transform in the RIP.
结果表明,Z变换算法的模拟结果比卷积分更接近理论值。
It indicates that simulation results by Z transform method are closer to analytical values than recursion convolution algorithm.
提出了一种基于小波变换域的块匹配运动估计搜索的新算法,模拟实验表明,利用此算法可获得比一般运动块匹配方法更大的峰值信噪比,具有更好的性能复杂度比。
The authors present a new algorithm for block-matching motion estimation based on wavelet transform. The simulation shows that this algorithm has better PSNR and performance-to-complexity ratio.
根据联合变换相关理论和光的衍射理论,定量分析了联合变换相关中两相关输入物长宽比与输出相关点形状间的关系。
The relation between output correlation spot shape and length width ratio of input correlation image was analyzed quantificationally by using of diffraction theory in the joint transform correlation.
最后介绍一种基于切面距离变换最小化的数据结构,这种变换产生的算法比以前描述的方法速度快而且鲁棒性强。
Finally it introduces a data structure for the minimization based on the chamfer distance transform which yields an algorithm that is both faster and more robust than previously described methods.
结果表明,系统在一定条件下存在一较为适宜的循环水量,且此适宜的循环水量随变换反应汽气比的降低而降低。
The results show that an appropriate quantity of circulating water exists under certain conditions in the system and decreases with a reduction in the steam gas ratio of the shift reaction.
针对标量量化压缩比小而向量量化压缩速度慢、图像复原效果不理想等弱点,提出了基于小波变换的分类量化图像编码算法(简称“分类量化编码”)。
To improve the compression ratio, image quality and coding efficiency, an image coding algorithm based on wavelet transform and scalar vector quantization is presented.
本文利用光束变换公式分析了高斯光束通过望远镜系统的传播,讨论了最大扩束比问题。
In this paper, the propagation of Gaussian beams in a telescope system is analysed by using beam transformation formulas. The maximum beam expanding ratio is discussed.
本文对光行差效应进行了较为深入的探讨,通过麦比乌斯变换将其与黎曼球联系了起来,从而极大地拓展了光行差效应的内涵与外延。
The article mainly discusses the aberration effect. We combine Riemann globe with it by Mobius transformation, thus it is developed that the connotation and the extension of aberration effect.
分析了几种不同的动态聚焦系统的特点,给出了激光束通过该系统的变换公式以及光杠杆比和透镜焦距的确定方法。
The several dynamic focus systems are analyzed. The transmission formulas of laser through them and the way to define the optical lever ratio and the focus of lens are given.
通过对一个球形信号进行傅立叶正反变换,发现用相位谱恢复的图形轮廓比振幅谱恢复的图形轮廓清晰。
Taking the sphere signal as an example, it is found that the phase spectrum is clearer than the amplitude one in resuming input signal.
因此,根据傅里叶变换的共轭对称性,提出了更具有一般性的长方环傅里叶周向谱能量百分比新算法。
So a new algorithm with rectangle loops Fourier spectral energy percentage is proposed by analyzing the conjugate symmetry of Fourier transform.
交比是和射影变换有关的一个基本不变量,利用交比不变性的计算来揭示场景的本质特征也是计算机视觉研究的一个热点。
To discover intrinsic properties of a scene by using the computation of cross ratio invariance has been one of the most hot research areas in computer vision fields.
在多输出变换器中,理想情况下,辅助输出电压与主输出电压满足变压器匝数比的关系。
In ideal multiple-output converter, the ratio of output voltage equal to the ratio of their turns.
阐述了采用电流变换器的必要性,并详细地推导了电流变换器变流比的计算方法。
This article represented the necessity of applying current converter and deduced in detail the calculation method of current converter's transformer ratio.
介绍了一种新型的零电压转换软开关技术在大升压比PW M直-直变换器上的应用。
In this paper, a novel Zero voltage Transition soft switching techniques have been investigated for a PWM DC DC large boost conversion application.
本文对光行差效应进行了较为深入的探讨,通过麦比乌斯变换将其与黎曼球联系了起来,从而极大地拓展了光行差效应的内涵与外。
We combine Riemann globe with it by Mobius transformation, thus it is developed that the connotation and the extension of aberration effect.
本文对光行差效应进行了较为深入的探讨,通过麦比乌斯变换将其与黎曼球联系了起来,从而极大地拓展了光行差效应的内涵与外。
We combine Riemann globe with it by Mobius transformation, thus it is developed that the connotation and the extension of aberration effect.
应用推荐