• In this paper, combined with the idea of Laser Speckle Velocimetry (LSV), experiments are carried out to measure the velocities of nano-particles in directional nanofluids with Zero-Crossing Method.

    本文结合激光测速技术LSV),应用激光散斑过定向流动纳米流体纳米粒子运动状态进行了理论分析及实验研究

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  • Traditionally, the method of bar code recognition is based on zero crossing of the second derivative.

    传统条码识别方法通过阶导数交叉来定位条码边界。

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  • Wavelet zero crossing representation is investigated. A new and simple method of reconstructing signal from its wavelet zero crossing representation is given.

    分析信号交叉表示方法给出新的零交叉表示进行原始信号重构算法。

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  • The filter processes input discrete sampling signal to recover continuous signal and suppress harmonic noise, and the zero-crossing frequency measuring method is improved.

    滤波器通过处理输入离散采样信号获得连续信号抑制谐波噪声,改进过零测方法

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  • Firstly, a new zero-crossing detection method with software comparing with hardware is designed.

    设计了一种新的软硬件结合的方法检测反电动势过零点

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  • The results of simulation demonstrate that the precision of correlation method is higher than that of zero crossing method when power system is jammed or has lots of harmonics.

    通过仿真表明电网信号受到较大干扰谐波含量较大时,相关测量精度检测法

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  • Based on switch function model of TCSC and MATLAB, the digital simulation method in researching zero-crossing point characteristic of the capacitor voltage is put forward.

    该文基于TCSC开关函数模型借助MATLAB仿真工具提出研究电容电压零点特性数字仿真方法

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  • One kind of sensorless control system for brushless DC motor based on DSP was introduced and the principle of back-EMF zero-crossing detection and realization method was discussed in detail.

    介绍了反电动势过零位置检测原理实现方法,并采用了数字式转速、电流双闭环控制

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  • This paper USES "virtual neutral point method" to measure the "zero crossing", then the soft deal "zero crossing" to get the six key position to commutate.

    本文采用虚拟中点方法识别反电势零点然后对过零点进行处理得到无刷电机换向六个关键位置

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  • In this paper, the control distortion near the zero crossing point is magnified; a method to minimize the distortion is proposed.

    本文中,接近零交叉点附近控制畸变放大,提出了一种减小这种畸变的方法

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  • Through adding a zero-crossing comparator and optimizing the inverter switching logic, this method which is based on the traditional two-state hysteresis control can achieve three-state outputs.

    方法传统环控制的基础增加零比较通过优化逆变器的开关逻辑,从而实现滞环控制下并网逆变器的三态输出。

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  • For that, this thesis combines short-time zero-crossing rate, the short-term energy method and frame cross-correlation method to cut the voice data. A series experiments were done afterwards.

    为此本文采用短时过零短时能量结合以及相连互相关方法语音进行切割并且做一系列实验

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  • The time domain analysis is most simple and intuitionistic. The short-time energy, the short-time zero crossing rate and the short-time self-correlation are main analysis method in time domain.

    时域分析方法简单最直观的方法,其中我们采用短时能量、短时、短时自相关函数等方法来分析语音。

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  • The time domain analysis is most simple and intuitionistic. The short-time energy, the short-time zero crossing rate and the short-time self-correlation are main analysis method in time domain.

    时域分析方法简单最直观的方法,其中我们采用短时能量、短时、短时自相关函数等方法来分析语音。

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