• Based on the introduction of components and principle of work of frequency modulation system of constant frequency AC power supply, math model of frequency modulation system is established.

    介绍某型交流电源频率调节系统组成工作原理基础建立频率调节系统的数学模型

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  • The arithmetic formulas for sine wave, linear frequency modulation signal, V-style frequency modulation signal, white noise signal, reverberation signal and echo signal are given by their definition.

    根据信号类型的定义,给出正弦信号、线性调频信号、V型调频信号、噪声混响回波信号的合成公式。

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  • The setting is introduced on the relationship between primary frequency modulation speed difference and primary frequency modulation load for current modulated type steam turbines with base-load.

    介绍了目前电调基本负荷汽轮机一次调频调频负荷关系曲线的设置情况。

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  • The static frequency modulation characteristic of electric network is the foundation of frequency stability of the electric network that determined by frequency modulation.

    由一调频决定电网静态调频特性,则电网频率稳定性基础

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  • The phenomenon that the effect of the high frequency modulation is better than that of the low frequency modulation is explained, and general rules of choosing modulator parameters are also presented.

    解释了高频调制效果低频调制好的实验现象并且给出确定调制器参数一般原则

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  • According to the frequency modulation function mode, this paper proposes to design the nonlinear frequency modulation (NLFM) signal using the data fitting method.

    根据调频函数模型提出利用数据拟合方法设计非线性调频信号

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  • The algorithm clearly displays the frequency modulation law of the nonlinear frequency modulation chirp signals at the same time.

    同时清楚地展示非线性调频信号频率调制规律

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  • Frequency modulation(FM): the form of modulation in which the frequency of the carrier is varied in accordance with the instantaneous value of the modulating signal.

    频率调制载波频率依照调校讯号瞬时而改变调制。

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  • In this paper, we present a new frequency modulation function on the basis of features of traditional non-linear frequency modulation signal.

    本文非线性调频技术引入引信探测体制中,利用线性调频波作为调制信号射频信号进行二次调频

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  • In this paper, we present a new frequency modulation function on the basis of features of traditional non-linear frequency modulation signal.

    本文非线性调频技术引入引信探测体制中,利用线性调频波作为调制信号射频信号进行二次调频

    youdao

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