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信号     
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  signal
    Study on Electric Signal Digital Measuring Technology and Its Application
    电气信号数字化检测技术及应用研究
短句来源
    Position Sensorless Control of Permanent Magnet Synchronous Motor Based on High-frequency Signal Injection
    基于高频信号注入的永磁同步电动机无位置传感器控制
短句来源
    A Variable Waveform Sonar Signal Generator
    一种可变波形的声纳信号发生器
短句来源
    A Time-Frequency Signal Discriminator
    时间频率信号判别器的研制
短句来源
    ANALYSIS AND EXPERIMENTS OF SIGNAL FLOW GRAPH FOR THE STABILITY OF SERIES VOLTAGE REGULATOR
    串联型稳压电源稳定性的信号流图分析与实验
短句来源
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  signals
    ERROR ANALYSIS OF MOSFET SWITCH TRANSMITTING AC SIGNALS
    MOS开关传输交流信号的误差分析
短句来源
    The Time-Resolution of Event Sequence Recordings and the Measurement of Power System Element Movement Real-Time Signals
    电力系统事件顺序记录的分辨率与元件动作实时信号的检测
短句来源
    Development of a Harmonic-Analysing System of Analogue Signals from Tape Recorder
    磁带机信号谐波分析系统的研制
短句来源
    A high precision measuring method by using the DFT technology to realize the phase difference of periodic signals with the same frequency
    利用DFT技术实现同频率周期信号相位差的高精度测量
短句来源
    A Method for Detecting the Frequency of Three-phase Asymmetrical Load Signals
    三相不对称负载信号的频率检测法
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  signaling
    The system overcame the shortcoming of relative-error′s changing along with the signaling frequency change in the direct frequency measurement and realized the same precision in the entire survey scope.
    系统克服了直接频率测量存在的测量相对误差随着被测信号频率变化而变化的缺点,实现了整个测频范围内测量的精度相同,对系统测频范围从软件和硬件两方面也做了讨论。
短句来源
    Application of two-position relay in controlling and signaling circuit of simulation substation
    双位置继电器在仿真变电站控制及信号回路中的应用
短句来源
    Analysis on signaling cable anti-interference against the field in substation
    变电站场地信号电缆抗干扰方法的分析
短句来源
    About the Faults Signaling in Substation Automation System
    变电站自动化系统中事故总信号现状及问题
短句来源
    In this paper, the main topic is intelligent outdoor reclose controller. Using distributed architecture, This controller integrates functions of protection, metering, signaling, communication and new kind of distribution automation.
    本文所研究的智能重合控制器采取户外分布式结构,将保护和测量、控制、信号、通讯以及新型配电自动化等功能集成一体;
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  singal
    Measurement System of Synchro's Shaft Angle Singal Based on MSP430Fe42x
    采用MSP430Fe42x的自整角机轴角信号测量系统
短句来源
    Based on the above research, we design the hardware of a control subsystem :such as PWM singal assistant circuit,BLDCM rotor position detect circuit.
    在以上研究的基础上,完成了基于TMS320LF2407A的控制子系统硬件设计:PWM信号辅助电路、BLDCM位置检测电路等等;
短句来源
    Dynamic strain amplifier metering devices include two parts which are generating standard dynamic strain signal and meauring the parameters of the singal after it through dynamic strain amplifier.
    动态应变仪的计量设备包括标准动态应变信号的产生及该信号通过动态应变仪后的参数测量两部分。
短句来源
    A Method Based on Wavelet Transform for Detictioning Partial Discharge Singal
    基于小波变换的局放信号检测与提取
短句来源
    A Method Based On Wavelet Transform For Detecting Partial Discharging Singal
    基于小波变换的局放信号检测与提取
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      signal
    In the early 1960s research into radar signal synthesis produced important formulas describing the action of the two-dimensional Fourier transform on auto- and crossambiguity surfaces.
          
    It is shown that the one-dimensional sampling sets correspond to Bessel sequences of complex exponentials that are not Riesz bases for $L^2[-R,R].$ A signal processing application in which such sampling sets arise naturally is described in detail.
          
    Given a bandlimited signal, we consider the sampling of the signal and some of its derivatives in a periodic manner.
          
    We present a method for finding the dual frame and, thereby, a method for reconstructing the signal from its samples.
          
    We show that if no sampling of the signal itself is involved, the sampling is not stable and cannot be stabilized by oversampling.
          
    更多          
      signals
    They are potential tools for the decomposition and handling of signals that, like speech or music, seem over short intervals to have well-defined frequencies that, however, change with time.
          
    Multiresolution Analysis and Multivariate Approximation of Smooth Signals in CB(Rd
          
    Frame Analysis of Irregular Periodic Sampling of Signals and Their Derivatives
          
    Unique reconstruction of band-limited signals by a Mallat-Zhong wavelet transform algorithm
          
    The radar ambiguity function plays a central role in the theory of radar signals.
          
    更多          
      signaling
    Alpha2-Adrenergic Receptors in Intestinal Epithelial Cells: Mechanisms of Signaling, Role, and Regulation
          
    Alpha2-Adrenergic Receptors in Intestinal Epithelial Cells: Mechanisms of Signaling, Role, and Regulation
          
    Sef is a transmembrane protein inhibiting FGF signaling.
          
    The results suggested that ZNF569 protein might act as a transcriptional repressor in MARK signaling pathway to regulate cellular processes.
          
    The aim of this research was to explore the effects and signaling pathway of ultraviolet-B (UVB) irradiation on the expression of hypoxia-inducible factor 1α (HIF-1α) and transferrin receptor (TfR).
          
    更多          
      singal
    Random input and correlation methods to improve the singal-to-noise ratio in chromatographic trace analysis
          
    Therefore, we conclude that the appearance of LHCP-mRNA is inhibited during continuous illumination, even though illumination leads to a storage of a light singal which promotes accumulation of translatable LHCP-mRNA in D.
          
    When the singal-noise ratio is increased to 30∶1, the resolution of temporally independent current sources separated by 2 mm becomes practicable.
          
    This review describes the chemokine subfamilies, the chemokine producer and target cells, their receptors, singal transduction mechanisms, and the role of chemokines during physiological and pathological conditions.
          
    Singal ont introduit le concept d'application presque fermée.
          
    更多          


    ~~

    本文首先叙述多谐振荡器作用过程和设计原理;讨论了如何改进多谐振荡器产生出的短形波的形状。根据振荡管工作情况,计算出矩形波的周期,指出实测数值同理论数值偏差的原因。放大器的控制提出三种基本电路,即控制放大器的第一栅极、抑制栅极和屏栅极,对于这些电路分别试验。试验结果,前两种电路效果较好,最后一种较差。我们设计出一个新的四路电子换接器电路,用在普通单射线示波器上,能同时观察四个电的过程。此电路采用两次转换,第一次从四个输入信号取出两个,第二次从两个信号输出一个。第一次变换频率是200周与6千周两种,第二次变换频率相应为100周及3千周,能观察几十周到100千周的交流电压,圆形相当清楚。示波器扫描的整步电压另外接入,四路信号任何一路都可作整步之用。只观察两个电的过程时,还能当二路换接器使用,用“输出选择器”来选择。所设计的这个换接器的特点是电路简单,使用的元件较少,同时都是一般元件,没有特殊器材,因此组装容易,成本低廉。

    Modulators are important elethents in the amplificatiou of weak d.c.sig-nals.Magnetic modulator have the ProPerties of providing highest voltage ga-can,stably amplify weak d.c.signals of the order of 10~13 watta Being stmpie in construe-tion of hasic frequency magnetic modulators,and a simple metbod of calculations from graphs together with an example and some discussion on manufacturing techniques

    调制器是放大微弱直流信号的重要环节。目前通用的各种调制器中,磁调制器具有最高电压放大倍数、灵敏度和稳定性能。基频磁调制器可稳定地放大功率为10~(-13)瓦的微弱直流信号,并且简单可靠,在一般自动调节和随动系统中得到广泛应用。本文阐述一种改进的基频磁调制器线路结构,提出一种简捷图解计算法,并给出了计算举例、实验结果和制造工艺中某些问题。

    The Paper is a summary of the result of studying and fabricating the Pneumatic 100—Point sampler. The device can select through automatic cycling 100—Point Pressure signal of 0.2—1.0kg/em~2 or any point by hand. The error of the deviceto the selected signal is smaller than 0.5% and the rangl of the adjustable sampling Peried is from 2 to 20 sec. The device is made on the basis of diagphragm, logic elements and the selected signal, Power, time signal, logic operation and on-off switches are all pneumatic. The...

    The Paper is a summary of the result of studying and fabricating the Pneumatic 100—Point sampler. The device can select through automatic cycling 100—Point Pressure signal of 0.2—1.0kg/em~2 or any point by hand. The error of the deviceto the selected signal is smaller than 0.5% and the rangl of the adjustable sampling Peried is from 2 to 20 sec. The device is made on the basis of diagphragm, logic elements and the selected signal, Power, time signal, logic operation and on-off switches are all pneumatic. The pneumatic matrix logic switches are made of organic glass with interior tube eonstuetion, which gives the advantages of low cost, light weight, small volume erc.

    本文是气动100点采样装置研究試制結果的总結。该装置能自动巡迴采入100点或手动选择任意点0.2—1.0公斤/厘米~2的气压信号。本装置对被采入信号引起的誤差小于0.5%,采样周期可調范围为2—20秒。它在气动膜式逻辑元件基础上組成,特点是被采入信号、动力、时間信号、逻辑运算、开关的启閉都是气动的。其中气动矩陣邏輯开关用有机玻璃制成,采用了內部管道的工艺,因而具有成本低、重量輕、体积小等优点。

     
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