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1. 发明申请

WO2021097888A1 一种马达瞬态失真测量方法及系统审中-公开
公开(公告)号：WO2021097888A1
公开(公告)日：2021-05-27
申请号：PCT/CN2019/121573
申请日：2019-11-28
申请人：瑞声声学科技（深圳）有限公司 , 瑞声科技（新加坡）有限公司
发明人：向征 , 郭璇
IPC分类号： G01R31/34 , G01R23/20
摘要：一种马达瞬态失真测量方法及系统，方法包括：设定马达的输入电压，利用输入电压生成同步扫频信号（S101）；利用同步扫频信号对马达进行激励，采集同步扫频信号及马达在振动方向上的加速度参数（S102）；利用同步扫频信号及加速度参数确定系统的阶次脉冲响应，利用阶次脉冲响应及同步扫频信号得到系统的输出信号（S103）；根据输出信号及测量信号确定失真信号，利用失真信号得到平均瞬态失真信号（S104）。相应的，系统包括：输入调节模块（201）、信号采集模块（202）、输出计算模块（203）、失真计算模块（204）。通过在不同输入电压信号的情况下获取输入电压信号对应的失真信号，并通过建模的方式排除线性及非线性失真信号，以计算平均瞬态失真信号，可提高评估马达性能的准确度。

2. 发明申请

WO2020002184A1 CAPTEUR DE COURANT A VANNE DE FLUX 审中-公开
公开(公告)号：WO2020002184A1
公开(公告)日：2020-01-02
申请号：PCT/EP2019/066583
申请日：2019-06-24
申请人： SAFRAN ELECTRONICS & DEFENSE
发明人： CHETANNEAU, Patrice , GUILLOT, François
IPC分类号： G01R15/18 , G01R33/04 , G01R23/20
摘要： Capteur de courant à vanne de flux comportant un noyau magnétique (13), un enroulement de mesure (14), un circuit d'excitation (23) agencé pour générer un signal d'excitation numérique (Se), un circuit d'acquisition (17) agencé pour acquérir une tension de mesure analogique (Ve) aux bornes de l'enroulement de mesure (14) et pour produire un signal de mesure numérique (Sm), un circuit d'asservissement de démagnétisation (32) agencé pour produire, à partir du signal de mesure numérique, un signal de démagnétisation numérique (Sdm) destiné à compenser un flux magnétique produit par le courant à mesurer, un sommateur (36) agencé pour sommer le signal d'excitation numérique et le signal de démagnétisation numérique de manière à obtenir un signal d'injection numérique (Si), et un circuit d'injection (37) agencé pour produire un courant d'excitation analogique à partir du signal d'injection numérique et pour injecter le courant d'excitation analogique dans l'enroulement de mesure.

3. 发明申请

WO2014023678A1 IMPROVED SELECTIVITY TEST 审中-公开
标题翻译：改进的选择性测试
公开(公告)号：WO2014023678A1
公开(公告)日：2014-02-13
申请号：PCT/EP2013/066350
申请日：2013-08-05
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： BERGLJUNG, Christian , CELANDER, Jan , JAKOBSSON, Peter , JEPPSSON, Henrik
IPC分类号： H04B17/00 , G01R23/20
CPC分类号： H04B17/29 , H04B17/0085 , H04B17/354 , H04W24/06
摘要： Testing radio equipment is described wherein an interfering signal is swept in frequency with a step size that is chosen proportional to the bandwidth of the receive channel of the radio equipment. For example, a respective frequency bandwidth (BCh) is determined (601) of a plurality of receive channels of the radio equipment. A proportionality constant is selected (603) for a frequency step size. For each respective receive channel, interfering radio signals are generated (605) and the interfering radio signals are controlled to stepwise sweep in frequency outside of each respective receive channel. The stepwise sweeping of the interfering frequency is performed with a frequency step size that is a product of the respective bandwidth and the selected proportionality constant. Any spurious response is detected (607) in the respective receive channel.
摘要翻译：描述测试无线电设备，其中干扰信号以与无线电设备的接收信道的带宽成比例的步长大小扫频。例如，确定无线电设备的多个接收信道中的相应频率带宽（BCh）（601）。对于频率步长选择比例常数（603）。对于每个相应的接收信道，产生干扰无线电信号（605），并且干扰的无线电信号被控制为在每个相应的接收信道之外的频率逐步扫描。干扰频率的逐步扫描以相应带宽和所选比例常数的乘积的频率步长进行。在相应的接收信道中检测到任何杂散响应（607）。

4. 发明申请

WO2012000510A1 METHOD AND SYSTEM FOR MONITORING STRUCTURAL HEALTH OF A FILTER IN A WIND TURBINE, AND A WIND TURBINE 审中-公开
标题翻译：风力涡轮机过滤器结构健康监测方法及系统及风力发电机组
公开(公告)号：WO2012000510A1
公开(公告)日：2012-01-05
申请号：PCT/DK2011/050245
申请日：2011-06-29
申请人： VESTAS WIND SYSTEMS A/S , TUMABCAO, Michael Casem , LOH, Tze Yen , POON, Ruo Ling Phoebe , LUO, Xue Wen , ANG, Zhi Yoong , ONG, Meng Chuan Kevin
发明人： TUMABCAO, Michael Casem , LOH, Tze Yen , POON, Ruo Ling Phoebe , LUO, Xue Wen , ANG, Zhi Yoong , ONG, Meng Chuan Kevin
IPC分类号： F03D9/00 , F03D11/00 , G01R19/25 , G01R23/165 , G01R23/20 , G01R27/16 , H02J3/01 , H02J3/38 , G01R31/02 , F03D7/04
CPC分类号： G01R31/42 , F05B2260/80 , H02J3/01 , H02J3/386 , Y02E10/763 , Y02E40/40
摘要： A method for monitoring structural health of a filter comprising a capacitor in a wind turbine, a system for monitoring structural health of a filter comprising a capacitor in a wind turbine, and a wind turbine are provided. The method includes measuring a capacitor harmonic current at an AC side of an inverter and after a grid choke, and measuring a capacitor harmonic voltage; determining an impedance value based on the measured capacitor harmonic current and the measured capacitor harmonic voltage; comparing the determined impedance value with a reference impedance value; and determining the structural health of the filter based on the difference between the determined impedance value and the reference impedance value.
摘要翻译：一种用于监测包括风力涡轮机中的电容器的滤波器的结构健康的方法，用于监测包括风力涡轮机中的电容器的滤波器的结构健康状况的系统和风力涡轮机。该方法包括测量逆变器AC侧和电网扼流圈之间的电容谐波电流，并测量电容器谐波电压; 基于所测量的电容器谐波电流和测量的电容器谐波电压确定阻抗值; 将所确定的阻抗值与参考阻抗值进行比较; 以及基于确定的阻抗值和参考阻抗值之间的差异确定滤波器的结构健康状况。

5. 发明申请

WO2010096770A3 NOISE SUPPRESSION TECHNIQUES IN HIGH PRECISION LONG-TERM FREQUENCY/TIMING MEASUREMENTS 审中-公开
标题翻译：噪声抑制技术在高精度长期频率/时序测量
公开(公告)号：WO2010096770A3
公开(公告)日：2011-01-27
申请号：PCT/US2010024933
申请日：2010-02-22
申请人： CALIFORNIA INST OF TECHN , HAJIMIRI SEYED ALI , WANG HUA , KOUSAI SHOUHEI
发明人： HAJIMIRI SEYED ALI , WANG HUA , KOUSAI SHOUHEI
IPC分类号： G01R23/20 , G01R23/02
CPC分类号： G01R29/26 , G01R31/31709
摘要： A frequency/timing measurement apparatus includes a reference source having a reference source output terminal. At least one target source has a target source output terminal. The at least one target source is communicatively coupled to the reference source. A frequency timing measurement block has a first input terminal electrically coupled to the reference source output terminal. A second input terminal is electrically coupled to the target source output terminal and at least one output terminal. The frequency timing measurement block is configured to perform a noise shaping technique to reduce measurement error attributable to a phase noise that is correlated between the reference source and the target source, and to provide a reduced correlated noise measurement at the at least one output terminal. A method to reduce correlated noise is also described.
摘要翻译：频率/定时测量装置包括具有参考源输出端的参考源。至少一个目标源具有目标源输出端。至少一个目标源通信地耦合到参考源。频率定时测量块具有电耦合到参考源输出端的第一输入端。第二输入端子电耦合到目标源输出端子和至少一个输出端子。频率定时测量块被配置为执行噪声整形技术以减少归因于在参考源和目标源之间相关的相位噪声的测量误差，并且在至少一个输出端子处提供减小的相关噪声测量。还描述了一种降低相关噪声的方法。

6. 发明申请

WO2007038143A3 METHOD AND APPARATUS TO MEASURE DIFFERENTIAL PHASE AND FREQUENCY MODULATION DISTORTIONS FOR AUDIO EQUIPMENT 审中-公开
标题翻译：用于测量音频设备的差分相位和频率调制失真的方法和装置
公开(公告)号：WO2007038143A3
公开(公告)日：2009-04-23
申请号：PCT/US2006036664
申请日：2006-09-20
申请人： QUAN RONALD
发明人： QUAN RONALD
IPC分类号： G01R23/20 , H03C3/00
CPC分类号： G01R31/2825 , G01R23/20 , G01R27/28 , G10L25/69
摘要： A testing method or apparatus utilizes multiple frequencies applied to a device under test (25) for measuring newly discovered frequency modulation effects. An embodiment may include a lower frequency signal with a smaller amplitude higher frequency signal to test a dynamic change in frequency response, gain, and or phase. This dynamic test can reveal frequency modulation effects. Another embodiment may include the use of a multiple frequency signal to dynamically induce a time varying phase or frequency distortion for the device (25) that has differential phase distortion. The device's (25) output is then measured with an FM detector (28) to measure a shift in one of the frequencies used in the test signal or to measure frequency modulation effects of any signals, including distortion products, from the device (25). Yet another embodiment of the invention may include biasing a device (25) with a voltage to span the output voltage range of the device (25) while measuring harmonic or intermodulation distortion or phase or frequency response at the various operating points.
摘要翻译：测试方法或装置利用施加到被测器件（25）的多个频率来测量新发现的频率调制效应。一个实施例可以包括具有较小振幅较高频率信号的较低频率信号，以测试频率响应，增益和/或相位的动态变化。这种动态测试可以显示频率调制效应。另一实施例可以包括使用多频信号来动态地引发具有差分相位失真的装置（25）的时变相位或频率失真。然后用FM检测器（28）测量设备的（25）输出，以测量测试信号中使用的一个频率的偏移量，或测量来自设备（25）的任何信号（包括失真产物）的调频效果，。本发明的另一个实施例可以包括利用跨越装置（25）的输出电压范围的电压来偏置装置（25），同时测量各个工作点处的谐波或互调失真或相位或频率响应。

7. 发明申请

WO2005093367A3 STUD SENSOR WITH FLOATING HEAD 审中-公开
标题翻译： STUD传感器与浮动头
公开(公告)号：WO2005093367A3
公开(公告)日：2005-12-15
申请号：PCT/US2005004587
申请日：2005-02-11
申请人： ZIRCON CORP , KRANTZ NORMAN L
发明人： KRANTZ NORMAN L
IPC分类号： G01R19/00 , G01R23/20 , G01R27/26 , G01V3/08
CPC分类号： G01V3/088 , G01V3/15
摘要： A sensor such as a stud sensor having a capacitor plate coupled with a spring to a head to provide a floating head. In other versions, the sensor has an on-switch coupled between a head and a body of a sensor; a head detachable from a body of the sensor; a marking instrument coupled with a lever to a body of a sensor; and a body having one or more low compression and/or low resistance slider pads.
摘要翻译：一种传感器，例如螺柱传感器，其具有与弹簧耦合到头部以提供浮动头部的电容器板。在其他形式中，传感器具有连接在头部和传感器主体之间的开关开关; 可从传感器的主体拆卸的头部; 与杠杆耦合到传感器的主体的标记仪器; 以及具有一个或多个低压缩和/或低电阻滑块的主体。

8. 发明申请

WO9852286A2 SWEPT FREQUENCY DEVICE TEST 审中-公开
标题翻译： SWEPT频率设备测试
公开(公告)号：WO9852286A2
公开(公告)日：1998-11-19
申请号：PCT/IB9800550
申请日：1998-04-14
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB
发明人： ZWEMSTRA TACO , SEUREN GERARDUS PETRUS HELENA , LOOIJER MARC THEODOR , JANSSEN AUGUSTUS JOSEPHUS ELIZ
IPC分类号： G01R27/28 , G01R23/20 , G01R29/26 , G01R31/28 , G01R31/30 , G01R31/316 , H03M1/00 , H03M1/10 , H03M7/30
CPC分类号： H03M1/1095 , G01R23/20 , G01R29/26 , G01R31/2839 , G01R31/30
摘要： The invention relates to a time domain method for obtaining transfer characteristics of a device under test (DUT). The method comprises the steps of applying a sine sweep and a cosine sweep to an input of the DUT, and measuring response signals at an output of the DUT. The sine sweep and cosine sweep together establish a complex input signal, whereby to each instant there is related a particular frequency. Similarly, the respective response signals together establish a complex response signal. The magnitudes and phases of both complex signals are calculated and the transfer characteristics of the DUT then follow from the magnitude ratio and the phase difference of the input signal and the response signal. The invention also relates to an arrangement for testing transfer characteristics of a DUT and to an integrated circuit comprising the necessary elements for testing a subcircuit contained therein.
摘要翻译：本发明涉及一种用于获得被测设备（DUT）的传输特性的时域方法。该方法包括以下步骤：向DUT的输入端施加正弦扫描和余弦扫描，以及在DUT的输出处测量响应信号。正弦扫描和余弦扫描一起建立一个复杂的输入信号，从而在每一瞬间都有一个特定的频率。类似地，各个响应信号一起建立复响应信号。计算两个复信号的幅度和相位，然后DUT的传输特性遵循输入信号和响应信号的幅度比和相位差。本发明还涉及用于测试DUT的传输特性和集成电路的装置，该集成电路包括用于测试其中包含的子电路的必要元件。

9. 发明申请

WO1996001433A1 CHARACTERIZING A DIFFERENTIAL CIRCUIT 审中-公开
标题翻译：表征差分电路
公开(公告)号：WO1996001433A1
公开(公告)日：1996-01-18
申请号：PCT/US1995007561
申请日：1995-06-13
申请人： MOTOROLA INC.
发明人： MOTOROLA INC. , BOCKELMAN, David, E. , EISENSTADT, William, R.
IPC分类号： G01R23/20
CPC分类号： G01R31/3167 , G01R1/06772 , G01R27/28
摘要： A method and apparatus is provided for characterizing a differential circuit. A measurement system (200) is used to introduce input signals to the differential circuit and to measure corresponding output signals. Particularly, an input differential wave is introduced into the differential circuit (1010) while correspondingly measuring a differential output wave (1020) and a first common mode output wave (1030). Similarly, an input common mode wave is introduced (1040) while measuring a second differential output wave (1050) and a second common mode output wave (1060).
摘要翻译：提供了用于表征差分电路的方法和装置。测量系统（200）用于将输入信号引入差分电路并测量相应的输出信号。特别地，输入差分波被引入差分电路（1010），同时相应地测量差分输出波（1020）和第一共模输出波（1030）。类似地，在测量第二差分输出波（1050）和第二共模输出波（1060）的同时引入输入共模波（1040）。

10. 发明申请

WO2021048812A1 METHOD FOR MEASURING AND DISPLAYING THE AUDIO SIGNAL/NOISE RATIO 审中-公开
公开(公告)号：WO2021048812A1
公开(公告)日：2021-03-18
申请号：PCT/IB2020/058469
申请日：2020-09-11
申请人： ELENOS S.R.L.
发明人： BUSI, Leonardo
IPC分类号： G01R19/00 , G01R19/25 , G01R23/18 , G01R23/20
摘要： The method allows the measurement of the audio signal-to-noise ratio, without having to interrupt the transmission to make the measurements. The method comprises: taking the audio signal processed by the system in a frequency band (∆F) for a predefined 5 measurement time period (T1); Fast Fourier Transform the sampled audio signal to obtain a signal power spectrum for the entire frequency band (∆F ); for each frequency (F), detect and store the maximum (PMax) and minimum (PMin) power values relating to each frequency considered with operations of "MaxHold" and "MinHold", to obtain 10 corresponding sequences, respectively of maximum power (CMax) and minimum power (Cmin) of the audio signal; for each frequency (F), obtain the signal / audio noise ratio (S / N) of the signal as a function of the corresponding values of said sequences (CMax) and (CMin). 15

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