共查询到16条相似文献,搜索用时 358 毫秒
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空调测试结果的不确定度分析是科学测试的重要特征,是合理的判断空调系统运行性能的重要前提,如何对空调测试结果进行不确定度分析是现阶段空调测试的一个很重要方面. 相似文献
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文章从对比介绍随机误差与系统误差开始,引入测量不确定度的概念,并分析了测量误差与测量不确定度的区别.文章以EMC测试中的抗扰度测试为背景,详细进行了一次音视频产品抗扰度特性测试的不确定度分析.说明了测量不确定度在测量结果的表达中具有重要的作用. 相似文献
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该文介绍了电磁兼容领域中EMC电磁兼容测试仪器,详细论述了EMC电磁兼容测试仪器校准过程中不确定度评定要点,并以浪涌发生器为例对开路输出电压峰值、短路输出电流峰值、电压波前时间等校准参数进行完整的不确定度分析,并给出了不确定度评定结果。 相似文献
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本文选择了RS103电磁辐射敏感度项目进行了测量不确定度的评定方法的研究。依据GJB151B-2013标准所规定的测试方法,分析出测量过程中包含的不确定度的分量,包括场强监视器、场强探头等设备引入的不确定度分量。根据分析建立数学模型,并对每一个引入的不确定度分量进行了详细介绍和计算,最终计算出RS103的扩展测量不确定度。 相似文献
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Goedbloed J.J. Beeckman P.A. 《Electromagnetic Compatibility, IEEE Transactions on》2004,46(2):246-262
A large round-robin test (RRT) was carried out to obtain quantitative information about the uncertainties that play a role in an International Electrotechnical Commission/International Special Committee on Radio Interference (IEC/CISPR) radiated emission test in the frequency range 30 to 300 MHz. Two different equipment under tests (EUTs) allowed us to distinguish between the measurement instrumentation and the EUT-induced uncertainties, a subset of the standards compliance uncertainties. This paper presents the rationale behind the various RRT-measurements, the way the ancillary equipment was continuously checked, the measurement results and the results of their statistical analysis. The test sites included open-area test-sites, semi-anechoic rooms and fully anechoic rooms. A major conclusion is that measurement instrumentation uncertainty considerations alone cannot explain the uncertainty relevant in an actual CISPR radiated emission compliance test. 相似文献
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Wegener C. Kennedy M.P. 《IEEE transactions on circuits and systems. I, Regular papers》2004,51(1):213-217
In this brief, we demonstrate the procedures of linear model-based testing for the example of a 12-b Nyquist-rate analog-to-digital converter (ADC). In a production test environment, we apply this technique to two wafer lots of devices, and we establish that the model is robust with respect to its ability to reduce the uncertainty of the test outcome. Reducing this uncertainty is particularly beneficial for higher resolution devices, for which measurement noise increasingly corrupts the measured "signal" that is the nonlinearity of the device under test. 相似文献