pulse frequency modulation

Pulse frequency modulation magnetic tape record type strong-motion instrument

脉冲调频式磁带记录强震仪

A High-Efficiency Pulse Frequency Modulation Control Scheme

一种高效率的PFM控制策略

This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation;

本文对双极性调制的无刷直流电动机仿真，分析了转速和调制频率对转矩影响；

Analysis of Partial Correlation Digital Pulse Compression of Linear Frequency Modulation Signal

LFM信号的部分相关数字脉压分析

This paper analyzes the principle of time domain measurement function of high per-formance spectrum analyzer and its use in Amplitude modulation ( AM), Frequency modulation ( FM) and pulse modulation test.

本文分析了高性能频谱分析仪时域测量功能的原理，并给出其时域测量功能在调幅、调频、脉冲调制测试中的应用。

PWPF ( Pulse Width Pulse Frequency) modulation technique is applied to the terminal guidance law design problem of space kinetic killing vehicle ( KKV) interceptor.

应用PWPF（Pulse Width Pulse Frequency）调制技术研究空间动能拦截器的末制导律设计问题。

The paper presents a novel ultra-audio frequency ( UAF) induction welding power based on ZCS-PWM ( Zero Current Switching-Pulse Width Modulation) technology.

介绍一种基于ZCS-PWM（零电流开关-脉宽调制）技术的新型超音频感应焊接电源。

Pulse modulation uses a pulse sequence or a group of digital signal as the carrier wave, and sine wave modulation use high-frequency sin wave.

脉冲调制是用脉冲串或一组数字信号作为载波的调制方式，正弦波调制则是载波为高频正弦信号的调制方式。

In the area of aerospace telemetry, Pulse Code Modulation/ Frequency Modulation ( PCM/ FM) system is one of the main plans in strategic weapons and rockets because of its high noise resistance, high flexibility.

在航天遥测领域中，PCM/FM传输体制抗噪声性能强、灵活性高，是国内外战略武器和火箭等的主要遥测手段。

The high frequency switch technology of large power is developed successfully by the perfect control of PWM ( Pulse Width Modulation) and ZCC ( Zero Current Control), ZVC ( Zero Voltage Control) in the unit.

通过PWM（脉宽调制）和ZCC（零电流控制）、ZVC（零电压控制）的完整控制，成功开发应用了大功率高频开关技术。

Comparison of wakefield and relativistic effects on the self-phase modulation and frequency shift of intense laser pulse propagation

尾波场与相对论效应对激光脉冲自相位调制及频移影响的比较研究