脉冲调制

充分利用了脉冲调制技术（PWM）和谐振变换技术。

The author makes full use of both the PWM modulation technology and the syntony converting technology .

提供了一种新的双随机脉冲调制技术，它能够很好地减小电力电子系统中存在的传导电磁干扰，这个调制技术是通过同时改变开关频率和脉冲的上升沿位置来实现的。

A novel dual randomized PWM modulator with synchronous varying switching frequency and pulse position delay is proposed to reduce conducted electromagnetic interference ( EMI ) in power converters .

P波段脉冲调制激励放大组件

P Band Pulse Modulated Exciting Amplification Module

用DSP实现脉冲调制输出和信号采样。

DSP has been used to achieve pulse modulation output and signal sampling .

高功率连续CO2激光器脉冲调制特性及特殊熔覆应用

Pulse Modulation Characteristic of High Power Continuous CO_2 Laser and its Application in Special Cladding

高斯脉冲调制Chirp信号分数阶Fourier变换的解析表示

Fractional Fourier Transform of Gauss Pulse Modulated Chirp Signal and Its Analytical Representation

介绍一种产生窄脉冲调制激励信号，并通过它激励声表面波器件（SAW）产生所需线性调频信号的方法。

This paper introduces a method for generating narrow pulse modulated exciting signal , which drives SAW device to generate the chirp signal .

空间矢量脉冲调制（SVPWM）扇区过渡的分析研究

The Analysis and Research on the SVPWM Sector Transition

针对DC谐振直流环节逆变器须采用离散脉冲调制的特点，提出了一种新型软化SPWM波形合成方法。

In accordance with the characteristics that resonant DC link inverter should adopt discrete pulse modulation , we propose a novel method of soft SPWM waveform synthesis .

数字副载波强度调制使用二进制移相键控（BPSK），光脉冲调制采用曼彻斯特编码。

BPSK and Manchester code are adopted for digital sub-carrier intensity modulation and optical pulse system respectively .

针对单头激光毛化存在的效率瓶颈问题，本论文提出了基于多棱镜扫描分光脉冲调制原理的多头CO2激光毛化技术方案。

In order to solve the problem of low efficiency of single-head laser texturing , a multi-heads CO2laser texturing technology based on pulse beam modulation by polygon scanning is proposed .

脉冲调制ICP源仍具有ICP源的优点，如等离子体密度高（1011-1012cm-3）、工作气压低（1-100mTorr）和等离子体源的装置结构简单等优点。

Pulse-modulated ICP source still has the advantages of the ICP source , such as high plasma density , low pressure and simple device structure .

实现了运动控制系统主要模块：加速度控制模块、脉冲调制控制模块、增量式编码器位置检测模块等；研究了基于FPGA的PID控制算法。

Realized the major modules of motion control system including accelerate control module , pulse adjusting control module and position measure module of incremental encoder , PID algorithm based on FPGA . 5 .

通过对频率控制字和相位累加器的控制，实现了FSK、PSK和脉冲调制等信号。

By control of frequency tuning word and phase accumulator , FSK , PSK and pulse wave is generated . 2 .

用PAM脉冲调制荧光仪分析籼稻剑叶在光温胁迫和恢复期间的荧光变化。

The change of chlorophyll fluorescence in flag leaves of indica rice was analysed under light and temperature stress and during recovery by PAM pulse modulation fluoremeter .

研究了VOC初始浓度、脉冲调制电源的脉冲频率和占空比对降解特性的影响。

The effect of initial VOCs concentration , the pulse frequency and duty cycle of the power supply on the decomposition properties are investigated .

论文的主要工作和结果概括如下：1.根据脉冲调制方式，分析了IR-UWB多址系统下的解调性能。

The main contribution is concluded as follows : 1 . The demodulation performances are analyzed for IR-UWB multi-access system .

本文简述了IMPATT器件的设计、制造工艺、振荡器的微波电路结构和脉冲调制的研制。

In this paper , the design consideration and fabrication technology of an IMPATT diode , microwave circuit structure , and a pulse modulator are described .

LiTaO3光幅度调制器在脉冲调制中的应用

Application of LiTaO_3 amplitude modulator in the pulse modulation

在详细介绍电光调制器（EOM）工作原理的基础上，理论并实验研究了EOM脉冲调制和移频调制技术。

The pulse modulation and frequency shift modulation technologies have been studied theoretically and experimentally based on the detailed introduction of operation principle of electro-optic modulator ( EOM ) .

以多盲的试验方法，通过音频脉冲调制波刺激穴位（大椎、命门、足三里、承山），并观察穴位电刺激对运动员的30m跑、站立式跳远、Cybex等动测试指标的影响。

Acupoints were stimulated with audio frequency pulse modulated wave and multi-blind method were used to investigate effects of the electric stimulation of acupoints on 30-meter running , standing long jumping and Cybex isokinetic testing index .

因此，脉冲调制VPTIG（PVPTIG）焊接工艺是一种适合于航空、航天领域重要铝合金构件焊接的方法。

Therefore , pulsed VPTIG ( PVPTIG ) is a very important welding method for welding aluminum and its alloys in aviation and aerospace realm .

在简要介绍8～30m范围内红外线自动计数原理后，较详细地报道了一种简单实用，工作可靠的红外光脉冲调制传输型电路的设计方法。

The paper elaborates a method of designing a simple and stable circuit that is used for pulse modulation of infrared transmission . On the basis of the discussion about the principle of the infrared automatic counting within a range of 8 ~ 30 meters .

本文建立了一个铝合金脉冲调制VPTIG（PVPTIG）焊接系统，包括焊接电源、焊接工作台行走机构及送丝机构等。

In this paper a pulsed VPTIG ( PVPTIG ) welding system used for welding aluminum alloys is established including welding power supply , welding stepped workbench , wire feeder .

分析研究了主从模块法并联高频软开关逆变电源的电路拓扑、稳态原理、三态离散脉冲调制（DiscretePulseModulation，DPM）电流滞环控制技术、均流原理和关键电路参数设计。

This paper discusses the circuit topology , steady principle , the three-state Discrete Pulse Modulation ( DPM ) hysteresis current control strategy , principle of current sharing and criteria for the key circuit parameters of parallel inverter with high frequency and soft switch constituted in master-slave mode .

该电路成本低，结构简单，易于制作，工程实用性较强。其次，论文在对超宽带脉冲调制研究的基础上，提出了一种基于PIC单片机的TH-PPM-UWB信号的设计方案。

The circuit is low cost , simple structure , easy to make , and has a strong engineering practicality . Secondly , on the foundation of research on modulation of UWB pulse , the paper presents a design scheme of TH-PPM-UWB signal using PIC single chip microcomputer .

本文基于鞍点法的结果推导了以分段线性函数表示的矩形脉冲调制的正弦波在波导中传输后的包络，并通过与用Hosono方法得到的数值结果比较验证了此公式的正确性。

A simplified model for the transmission of rectangular-pulse modulated carrier through waveguide in the form of segmented linear function is derived based on the results obtained through saddle point method , and its validation is verified by comparison with the numerical results of Hosono 's method .

体外细胞脉冲调制微波辐照实验系统的设计与控制

Design and Control of in Vitro Pulse Modulated Microwave Exposure System

利用脉冲调制电子探束测量电子诱导脱附阈值能量

Measurement of Threshold Energy of Electron-stimulated Desorption by Pulse-modulated Electron Beam

窄脉冲调制的高频大功率源设计

Design of HF High Power Source Modulated by Narrow Pulse