The braking mode control of reviving power-consumption of large momentum fly-wheel motor is discussed on the basis of pulse-modulated amplitude-modulation in this paper.
讨论具有大惯量飞轮负载的直流无刷、定于无铁芯电机,在脉宽调制调幅有源控制的基础上,完成再生能耗制动控制以及低速下转换到有源制动控制的主要技术问题。
The known actual measured noise characteristic data of CFAs are reviewed, and the usefulness of pulse-modulated CFAs in pulsed Doppler radars are discussed in this paper.
本文回顾了已知的正交场放大管(CFA)噪声性能的实际测量数据,并且讨论了脉冲调制的CFA在脉冲多普勒雷达中的有用特性。
Dr Learned, however, reckons the pulse-period of a Cepheid could be modulated by a suitable beam of neutrinos.
而且,伦德博士测算出“造父变星”的脉动周期能够用适当的微中子束加以调整。
The growing ion acoustic wave instability caused by the slow electron drift is studied by both CW and pulse modulated wave methods.
用连续波和调制脉冲波两种方法研究了由慢电子漂移引起的增长离子声波不稳定性。
This detector has adopted modulated light and 4 pulse synchronous demodulating technique. So the detecting reliability and sensitivity are improved greatly.
这种光电检测器采用了调制光和4脉冲同步解调技术,提高了光电检测的可靠性和灵敏度。
This paper discusses the theory analysis and circuit design of high-frequency high power source which is modulated by narrow pulse.
本文对窄脉冲调制的高频大功率源进行理论分析和电路设计。
In this paper, a PD radar signal is researched, which is modulated by randomly staggered pulse sequence whose phase is also modulated by random binary-phase code.
本文研究了随机脉冲位置调制与脉冲之间随机相位调制相结合的脉冲多卜勒雷达信号。
This paper presents a pulse density modulated (PDM) series resonant inverter developed for plastic film surface treater. The use of the PDM inverter enables the constant frequency and voltage.
该文介绍了一种采用脉冲密度调制(PDM)控制策略的串联谐振型塑料薄膜表面处理电源的研制。
The radar range recursion filter formula, which is widely used in present radars, for linear frequency modulated pulse compression signal, has not been formed yet.
在现代雷达中,得到广泛应用的线性调频脉冲压缩信号的雷达距离数据递推器公式还未建立。
The Sine wave Pulse Width Modulation (SPWM) is used to reduce the wastage and the noise of the motor more effectively, as comparing to the equal pulse width modulated PWM.
相对于等宽脉宽调制PWM,正弦波脉宽调制SPWM可以有效地降低电动机的损耗和噪声。
It will give patients treatment by means of the amplified amplitude modulating wave current that can be obtained form medium frequency amplitude modulated by the low frequency pulse signal.
它将有关低频脉冲信号对中频调幅后,利用被放大的调幅波电流对人体进行治疗。
In the PAPM UWB system, input data was modulated onto both the pulse phases and the pulse positions.
PAPM调制uwb系统的输入数据调制到脉冲的幅度和位置上。
The article analyses the seawater transport model of the modulated-pulse LIDAR signal, and the frequency characteristic of the seawater backscattering signal and target reflecting signal are studied.
文章分析了调制脉冲激光雷达探测信号水下传输模型,研究了海水后向散射信号以及目标反射信号的频域特性。
Active band-pass filter is a important section of pulse width modulated rebalance loop.
有源带通滤波器是脉冲调宽再平衡回路的一个重要部分。
This module uses a circuit topology of forward pulse width modulated - zero current quasi - resonance soft - switching , combined with active clamp technology.
该变换器电路结构上采用正激一零电流准谐振软开关电路拓扑结构,并结合了有源钳位技术;
This research is aimed to get higher quality functions by use of single- chip processor and way of pulse frequency modulated (PFM) or pulse width modulated (PWM).
用单片机作为控制手段,采用脉冲调频(或调宽)方法,达到了较理想的控制品质。
Pulse compression; Linear frequency modulated signal; Phase encoding signal; Echo signal; ADS;
脉冲压缩;线性调频信号;相位编码信号;目标回波信号;ADS;
A binary width-modulated pulse rebalance loop is applied in the accelerometer.
同时采取了二元调宽脉冲加矩方式的再平衡回路。
This system realized Q-modulated technique by the construction of nonlinear mirror This new Q-modulated technique is simple, stable and pulse half-width is wide.
该系统使用非线性镜结构实现调Q。这种新型的调Q技术简单、稳定,且半宽度较宽。
In this paper, a current control mathematical model is established with fixed switching frequency for three-phase pulse width modulated (PWM) converter.
建立了三相电压型PWM整流器电流控制数学模型,输入电流在静止坐标系下实现了固定开关频率的解耦控制。
The in-pulse feature analysis is made on the signals with single-frequency, and those signals respectively being linearly frequency-modulated, phase coded. The simulation results are given.
对单频信号、线性调频信号、二相编码信号、四相编码信号进行了脉内特征分析,给出了仿真结果。
According to the moving target's echo characteristics acquired by the frequency-modulated stepping radar, the envelope migration is firstly carried out for the subset of the compressed pulse.
根据调频步进雷达运动目标的回波特性,首先对压缩后的子脉冲进行包络平移。
A power converter circuit (3) drives a switching device by the pulse-width modulated wave for converting a direct current into the three phase alternating current.
电力变换器主电路部(3),其根据该脉冲宽度调制波对开关元件进行驱动,将直流电压转换为三相交流电压;
This paper introduces the influences of phase noise to radar systems. The measurement of phase noise in pulse modulated carrier is one of the most important techniques.
介绍了相位噪声对雷达系统的影响,这是毫米波精密制导技术的关键课题之一。
Then the multi-pulse injection mode modulation technique is presented and a serial of modulated injection modes are designed.
进而提出了多脉冲喷油模式的调制技术,并设计了一系列调制喷油模式。
Directly modulated laser combining with phase modulator is adopted to produce large chirped light, which can be compressed by DCF to generate the optical pulse.
该方案采用直调激光器配合相位调制器产生大啁啾并由DCF压窄输出光脉冲。
Directly modulated laser combining with phase modulator is adopted to produce large chirped light, which can be compressed by DCF to generate the optical pulse.
该方案采用直调激光器配合相位调制器产生大啁啾并由DCF压窄输出光脉冲。
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