• 扼要介绍最近研制成功高速水流噪声测试系统

    It is briefly introduced that a set of high flow cavitation noise measuring system has been used recently.

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  • 通过采用国际上先进实验室比对能力验证方法,提出了相位噪声测试系统比对方案。

    The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.

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  • 该文提出虚拟噪声测试系统设计方案设计了虚拟噪声测试系统硬件系统软件系统

    This article has put forward the system design plan of virtual noise tested, designing the systematic hardware system and software system of the virtual noise.

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  • 叙述虚拟仪器技术噪声测试中的应用分析了噪声源,设计选择噪声测试系统软件部分

    This article discusses the application of virtual instrument in the measurement of noise, analyzes the source of the noise and designs the software of the measurement system.

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  • 几种办法可以尽量降低测试系统电离干扰引起噪声

    There are several ways to minimize noise in the test system due to ionization interference.

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  • 结果表明建立测试系统可满足工程精度要求有效识别拖拉机主要噪声来源

    The results indicate that the established test system meet the requirement of engineering precision and can distinguish main tractor noise source effectively.

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  • 最后利用测试系统飞机座舱模型噪声无源控制系统进行了控制性能测试,控制效果明显

    The experimental result of the control performance of the passive noise control system, shows that the control effect was notable.

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  • 介绍了一种基于虚拟仪器电子器件低频噪声测试分析系统

    A noise testing and analyzing system of electronic device, based on the idea of virtual instrumentation, is introduced.

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  • 不过,这种对称性对于噪声抑制没有意义,系统应当没有信号也能抑制噪声的发生(侵入),事实上,通常系统测试需要做的。

    The system must reject noise even when there is no signal and, in fact, this is usually how system noise testing is done.

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  • 运用该噪声识别模型及所介绍测试分析系统,对GZ 6921型后置发动机客车噪声进行了识别。

    Noise source identification for the model GZ6921 bus having rear mounted engine has been car ried out by means of the noise source identification model with testing and analysing system recommended.

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  • 本文介绍电液伺服系统几种动态测试方法包括随机噪声测试锤击法测试测试

    In this paper several dynamic testing methods of electrohydraulic servo systems are introduced, including stochastic noise test, hammering test and sweep frequency test.

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  • 序列信号可以模拟噪声广泛应用于扩频通信数字加密、数字系统测试领域

    The M-sequences signal can simulate the white noise, which has been widely applied in the fields of spread spectrum communication, digital cryptography, digital system test and so on.

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  • 本文介绍一个噪声自动测试系统

    An automated noise test system is introduced.

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  • 虚拟暗室测试理论用于普通环境下的EMI测试方法,它的基础适应噪声抵消系统

    Virtual chamber theory describes a new method used to test equipments EMI in normal environment that is based on adaptive noise cancellation system.

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  • 另外,水文对噪声测量系统测试方法进行了讨论,提出了一些建议

    In addition, the noise measurement system and method are discussed in the paper and some Suggestions are given.

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  • 背景噪声存在,使得说话人识别系统训练环境测试环境发生配,导致系统性能发生急剧下降。

    The background noise leads a mismatch between the training environment and testing environment, and degrades the performance of speaker identification system.

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  • 针对低频噪声测试频率范围选择合适数据采集板卡完成评价系统采集模块

    According to the noise test frequency range, select the appropriate data acquisition board and complete the evaluation system of collecting module.

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  • 本文讨论了常用噪声系数测试方法—Y因子高频中频衰减器本身失配测试系统其它部分的影响所造成测试误差

    This paper discussed the error in the measurement of noise figure—The method of Y factor , The error is caused by mismatch of RF attenuater and IF attenuater and the others in the measurement system.

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  • 由于噪声存在使测试分析系统采集到的焊接电弧电信号数据误差增大,数据的精确程度受到干扰发生变化

    Welding arc data error of signal collected will be increased by the existence of noise. Accurate degree of data will be interfered and change.

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  • 测试分析电机振动为电机的故障诊断电机噪声控制提供途径因此必要建立一个电机振动测试分析系统

    Measuring and analyzing the vibration of electric motor provides a way to detect motor's fault and reduce noise. It is vital of importance to develop a measurement and analysis system.

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  • 研究干扰测试系统噪声分析噪声主要传播途径性质

    Study on the interference of the noise source of the test system, analyzing the spreading primarily path with kind.

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  • 测试结果表明系统具有噪声底部满足绝大部分测试需要

    The test results indicate that the system has a very low noise background and can satisfy the most test requirements.

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  • 另外,对测试系统噪声进行了分析计算通过误差分析确定了设备的静态特性

    In addition, noise of the system was analyzed and calculated, static characteristics were determined by error analysis.

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  • 流动vlbi的观测试天线系统噪声温度天线效率观测系统调试检测重要内容。

    Antenna system noise temperature and antenna efficiency are the most important items in the system debugging and checking before the VLBI observation.

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  • 系统主要完成大类功能测试噪声器件噪声温度校准固态噪声比。

    The system provides two major functions including measuring noise temperature of low noise devices and calibrating the Excess noise Ratio (ENR) of solid-state noise sources.

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  • 详细分析震动测试系统各种噪声

    In the paper, most kinds of noise source of micro seismic measurement system are analyzed in detail.

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  • 简单功率放大器噪声放大器完整收发器系统通过一个通用测试接口可以完成测试

    From simple Power Amplifiers and LNAs to complete Transceivers and Systems, testing is accomplished through a universal test Head interface.

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  • 简单功率放大器噪声放大器完整收发器系统通过一个通用测试接口可以完成测试

    From simple Power Amplifiers and LNAs to complete Transceivers and Systems, testing is accomplished through a universal test Head interface.

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