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signal
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  信号
    The Study on Optimal Method of Urban Traffic Signal Control
    城市交通信号优化控制方法的研究
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    Technology of Short Signal Analysis and Its Application in Fault Diagnosis
    短信号分析技术及其在故障诊断中的应用
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    Research on Dynamic Optimization and Control Techniques for Urban Traffic Signal
    城市交通信号动态优化控制技术研究
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    Study on Wavelet Application in Signal Denoise and Data Compression
    小波理论在信号去噪和数据压缩中的应用研究
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    Study on Friction Modeling and Compensation on an AC Servo Feed System Based on Signal Feature
    基于信号特征的数控交流伺服进给系统摩擦建模与补偿研究
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  “signal”译为未确定词的双语例句
    Research on the Buried Pipe SIM System Based on the Combination of Acoustic Signal Detection and Deterioration Model
    声信号检测与腐蚀模型法相结合的埋地水管SIM系统研究
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    Research on ECG Signal Processing Method of ECG Telemonitoring Diagnosis System
    远程心电监护诊断系统心电信号处理方法研究
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    Multi—signal Monitoring System with DBJ—Z80
    使用DBJ—Z80单板机的多路参数监测系统
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    A Digital Signal Processing System Based on Two TMS32010s
    用两片TMS32010构成的一种数字信号处理系统
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    The Compensating Network and the Elimination of Signal Interference in a Direct Product System
    补偿网络与直积系统内部干扰的消除
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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.
      
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In this paper possible schemes for constructing several devices used in pneumatic data-processing equipments and pneumatic analog computing equipments are discussed. For the former, a selecting circuit using pneumatic relays for connecting 100 signals in sequence and a pneumatic analog-to-digital converter based on the so-called pneumatic interval indicator are presented. For the latter, a pneumatic multiplier and an approximate dead-time element using long tubes are presented.

本文讨论了构成气动数据处理装置及气动模拟计算装置中几种器件的可能方案.属于前者的是以气动逻辑元件组成的顺序接通100个信号的气动选择线路,以及在气动行程指示仪的基础上构成的气动模拟-数字转换器;属于后者的是气动乘法元件和以长导管构成的近似纯滞后元件.

In this paper three problems in the nonlinear automatic control systems are analyzed. In the first problem, the monofrequency forced oscillation in the symmetrical non-linear systems is investigated. By using a nomograph (fig. 2) the amplitude A_B and thefrequency Ω_B. of the forced oscillation at the end of the nonlinear element can be easilyobtained. A stability criterion of the forced oscillation based on the logarithmic charac-teristics is also given. In the second problem, we discuss the effects (error,...

In this paper three problems in the nonlinear automatic control systems are analyzed. In the first problem, the monofrequency forced oscillation in the symmetrical non-linear systems is investigated. By using a nomograph (fig. 2) the amplitude A_B and thefrequency Ω_B. of the forced oscillation at the end of the nonlinear element can be easilyobtained. A stability criterion of the forced oscillation based on the logarithmic charac-teristics is also given. In the second problem, we discuss the effects (error, stability, etc.) of the sinusoidalsignal on the slow changing signal in the symmetrical nonlinear control systems. In the third problem, the amplitude B and the frequency Ω_B of the forced oscillationfor smoothing the nonlinear characteristics of the nonlinear element are determined inorder to obtain a system with good dynamic characteristics.

本文讨论了下列三个问题的对数分析方法: 在第一个问题中,讨论了非线性自动控制系统单频强迫振荡的对数分析方法,给出了一个可以简化求解强迫振荡参数A_B 和φ的算图(图2)以及一个分析单频强迫振荡稳定性的对数稳定判据。在第二个问题中,讨论了如何确定正弦信号对缓变信号在对称非线性系统中通行时所带来的影响,其中包括误差、稳定性等问题。在第三个问题中,讨论了如何确定强迫振荡的振幅B和频率Ω_B以及辗平非线性元件的非线性特性,从而提高系统的动态性能。

A simple, robust, and high precision mechanical square-wave polarograph is described which has a very high signal-to-noise ratio, and thus greatly reduced interference due to "capillary response". With this instrument reversibly-reduced ions such as Cd~(2+) and Pb~(2+) at concentrations down to about 2×10~(-8) M can be detected.This instrument also includes a device with which the i-t curve in each half period of the square wave voltage can be obtained. It is a convenient tool for the investigation of...

A simple, robust, and high precision mechanical square-wave polarograph is described which has a very high signal-to-noise ratio, and thus greatly reduced interference due to "capillary response". With this instrument reversibly-reduced ions such as Cd~(2+) and Pb~(2+) at concentrations down to about 2×10~(-8) M can be detected.This instrument also includes a device with which the i-t curve in each half period of the square wave voltage can be obtained. It is a convenient tool for the investigation of the mechanism of electrode processes.

本文提出一种结构简单坚固准确度高的机械式方波极谱仪,讯号燥声比很高。最高灵敏度,可测出2×10~(-8)M电极反应为可逆的离子。仪器中并有测量方波半周期i-t曲线的装置,可用以研究电极过程。

 
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