Gaoya dianqi, 2006 谐波分析法应用于介损测量,在电网频率波动,被测信号含有间谐波的实际条件下,很难做到理想同步采样,由此造成的频谱泄漏将严重影响介损的测量精度。在频域分析了非同步采样条件下,谐波分析法介损测量产生误差的原因,并从介损定义出发得出基于相对测量的加窗谐波分析法能有效提高介损测量精度,仿真结果也证明了所提算法的有效性和可行性。
冯小华
doaj
[Design of a dynamic measurement system for Bl factor spatial distribution of resonant blood viscoelastic sensor]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Qian J, Sun H, Wang B.
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Gaoya dianqi, 1996 本仪器利用补偿技术,可将系统谐波电压产生的谐波电流完全消除掉,从而测得由氧化锌避雷器的非线性引起的三次谐波电流,进一步通过已建立的三次谐波阻性电流同全阻性电流之间的关系,获得氧化锌避雷器的阻性电流。实测对比表明,该仪器的测试结果与LCD—4型相近。
游一捷
doaj
Gaoya dianqi, 2003 对MOA交流伏安特性进行分析,发现随着电压升高,阻性电流谐波分量增长幅度明显比基波分量增长幅度大,但阻性电流基波分量增长稳定。用MOA交流伏安特性对电压波动的影响进行仿真分析表明,在正常的电压波动范围内,阻性电流及其谐波分量随电压波动呈线性变化,阻性电流基波分量波动幅度最小,3次谐波分量波动幅度最大,MOA泄漏电流检测以阻性电流基波分量检测可靠性最高。
邵涛, 孙广生
doaj
[An analyzation on the characterization of frequency tuning of vestibular evoked myogenic potential in patients with unilateral vestibular hypofunction]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2022 Zhang S, Li Z, Li L, Zeng X.
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Gaoya dianqi, 2019 在交直流混合互联大电网运行方式下,发现柔性直流与交流系统间发生的谐振具有高频次、宽频域的新特性。为研究谐波注入对500 kV联接变压器铁心振动的影响,通过建立联接变压器绕组、铁心电磁—结构力场有限元模型,考虑铁心磁致伸缩及洛伦兹力的作用,仿真计算得到变压器铁心磁通密度、应力分布、振动位移和加速度。对比分析基波及含谐波激励工况下的仿真结果表明,谐波注入前后铁心磁通分布无明显变化;谐波注入后,铁心上应力分布出现明显变化,且最大应力增加两个数量级;基波激励下最大振动频率为100 Hz ...
黄之明 +8 more
doaj
[Quantitative analysis of the effect of contact pressure on the reflection characteristics of radial pressure wave]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022 Tan J, Xu L, Sun H, Xu B, Li Y, Yao Y.
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[Spherical measurement-based analysis of gradient nonlinearity in magnetic resonance imaging]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiYang X +7 more
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[Study on the separation method of lung ventilation and lung perfusion signals in electrical impedance tomography based on rime algorithm optimized variational mode decomposition]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiGao G +6 more
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[Research on phase modulation to enhance the feature of high-frequency steady-state asymmetric visual evoked potentials]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Zhao W +7 more
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