KR20080089953A - 계측 관리형 진동현의 고유 주파수 측정 방법 - Google Patents
계측 관리형 진동현의 고유 주파수 측정 방법 Download PDFInfo
- Publication number
- KR20080089953A KR20080089953A KR1020070032785A KR20070032785A KR20080089953A KR 20080089953 A KR20080089953 A KR 20080089953A KR 1020070032785 A KR1020070032785 A KR 1020070032785A KR 20070032785 A KR20070032785 A KR 20070032785A KR 20080089953 A KR20080089953 A KR 20080089953A
- Authority
- KR
- South Korea
- Prior art keywords
- frequency
- peak
- value
- natural frequency
- vibrating string
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
- G01R23/07—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage using response of circuits tuned on resonance, e.g. grid-drip meter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Function generator | Keithley-2000 | 진동현 측정 시스템 | 정확도(%) |
500 | 500 | 500.04 | 0.008 |
1000 | 1000 | 1000.07 | 0.007 |
1500 | 1500 | 1500.09 | 0.006 |
2000 | 2000 | 2000.11 | 0.005 |
2500 | 2500 | 2500.12 | 0.005 |
3000 | 3000 | 3000.13 | 0.004 |
3500 | 3500 | 3500.14 | 0.004 |
4000 | 4000 | 4000.14 | 0.003 |
4500 | 4500 | 4500.14 | 0.003 |
5000 | 5000 | 5000.14 | 0.003 |
5500 | 5500 | 5500.14 | 0.003 |
6000 | 6000 | 6000.13 | 0.002 |
6500 | 6500 | 6500.12 | 0.002 |
7000 | 7000 | 7000.12 | 0.002 |
7500 | 7500 | 7500.12 | 0.002 |
8000 | 8000 | 8000.12 | 0.001 |
Claims (2)
- 진동현 센서의 진동현의 구동 신호에 대하여 샘플링하는 단계;샘플링 된 데이터를 주파수 성분으로 분석하기 위하여 고속 푸리에 변환을 수행하는 단계;고속 푸리에 변환으로 얻어진 신호의 세기로부터 가장 세기가 큰 주파수인 피크 주파수에서의 피크값, 상기 피크 주파수에 대하여 우측의 주파수에서의 우측 파워값, 및 상기 피크 주파수에 대하여 좌측의 주파수에서의 좌측 파워값을 각각 측정하는 단계; 및상기 피크 주파수, 상기 피크값, 상기 우측 파워값, 및 상기 좌측 파워값을 기초로 하여 상기 진동현의 고유 주파수를 얻는 단계를 포함하는 진동현의 고유 주파수 측정 방법.
- 제1항에 있어서, fP < fC일 때, fC = (YR - YL)/(YP - YL) + fP이고, fP > fC일 때, fC = (YR - YL)/(YP - YR) + fP이며, 여기서, fP, fR, fL은 각각 상기 피크 주파수, 상기 피크 주파수에 대하여 우측의 주파수, 및 상기 피크 주파수에 대하여 좌측의 주파수이고, YP, YR, 및 YL은 각각 상기 피크값, 상기 우측 파워값, 상기 좌측 파워값에 fP로부터 충분히 떨어진 지점의 파워 P(fa)를 뺀 값의 로그값인 진동현의 고유 주파수 측정 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070032785A KR100883394B1 (ko) | 2007-04-03 | 2007-04-03 | 계측 관리형 진동현의 고유 주파수 측정 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070032785A KR100883394B1 (ko) | 2007-04-03 | 2007-04-03 | 계측 관리형 진동현의 고유 주파수 측정 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20080089953A true KR20080089953A (ko) | 2008-10-08 |
KR100883394B1 KR100883394B1 (ko) | 2009-02-11 |
Family
ID=40151367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070032785A KR100883394B1 (ko) | 2007-04-03 | 2007-04-03 | 계측 관리형 진동현의 고유 주파수 측정 방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100883394B1 (ko) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102426053A (zh) * | 2011-09-19 | 2012-04-25 | 基康仪器(北京)有限公司 | 一种单线圈振弦式仪器等精度频率测量方法和装置 |
CN106647430A (zh) * | 2016-08-17 | 2017-05-10 | 江西飞尚科技有限公司 | 一种基于单脉冲激励振弦传感器的激振方法 |
CN113899444A (zh) * | 2021-10-08 | 2022-01-07 | 招商局重庆交通科研设计院有限公司 | 一种基于汉宁双窗的振弦传感器共振频率测量方法 |
WO2022091329A1 (ja) * | 2020-10-30 | 2022-05-05 | 三菱電機株式会社 | 周波数検出器 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8671758B2 (en) | 2011-11-17 | 2014-03-18 | Campbell Scientific, Inc. | System and method for measuring the frequency of a vibrating object |
CN110940447A (zh) * | 2019-12-10 | 2020-03-31 | 上海宏信设备工程有限公司 | 一种无线基坑支护受力的监测系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5469745A (en) * | 1993-06-01 | 1995-11-28 | Westinghouse Electric Corporation | System for determining FOVM sensor beat frequency |
JP3211615B2 (ja) * | 1995-04-06 | 2001-09-25 | 日産自動車株式会社 | 機械作動音の異常判定方法 |
US7308368B2 (en) * | 2004-09-15 | 2007-12-11 | Asml Netherlands B.V. | Method and apparatus for vibration detection, method and apparatus for vibration analysis, lithographic apparatus, device manufacturing method, and computer program |
KR20060114169A (ko) * | 2005-04-29 | 2006-11-06 | 한국전력공사 | 가스터빈의 연소진동을 원거리에서 감시하기 위한 장치 및방법 |
-
2007
- 2007-04-03 KR KR1020070032785A patent/KR100883394B1/ko active IP Right Grant
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102426053A (zh) * | 2011-09-19 | 2012-04-25 | 基康仪器(北京)有限公司 | 一种单线圈振弦式仪器等精度频率测量方法和装置 |
CN106647430A (zh) * | 2016-08-17 | 2017-05-10 | 江西飞尚科技有限公司 | 一种基于单脉冲激励振弦传感器的激振方法 |
WO2022091329A1 (ja) * | 2020-10-30 | 2022-05-05 | 三菱電機株式会社 | 周波数検出器 |
CN113899444A (zh) * | 2021-10-08 | 2022-01-07 | 招商局重庆交通科研设计院有限公司 | 一种基于汉宁双窗的振弦传感器共振频率测量方法 |
Also Published As
Publication number | Publication date |
---|---|
KR100883394B1 (ko) | 2009-02-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100883394B1 (ko) | 계측 관리형 진동현의 고유 주파수 측정 방법 | |
Zygarlicki et al. | Variable-frequency Prony method in the analysis of electrical power quality | |
CN100535681C (zh) | 电流互感器的变比和角差的在线标定和校验方法 | |
Grillo et al. | An efficient extension of the zero-crossing technique to measure frequency of noisy signals | |
CN102928713A (zh) | 一种磁场天线的本底噪声测量方法 | |
CN209486181U (zh) | 一种准确测量频率的系统 | |
Ni et al. | An automatic procedure for train speed evaluation by the dominant frequency method | |
CN105974278B (zh) | 基于正弦拟合的低频混合激励下油隙复电容加速测试方法 | |
KR940002724B1 (ko) | Ic테스터의 ac평가장치 및 그를 이용한 평가방법 | |
Nicoară et al. | Partial discharge diagnostics in power and instrument transformer based on acoustic emission method | |
CN204925379U (zh) | 一种数字化电能表脉冲信号的综合测试系统 | |
Horska et al. | A validation of a THD measurement equipment with a 24-bit digitizer | |
CN1201911A (zh) | 一种地震检波器测试仪检定方法及其装置 | |
US9759751B1 (en) | Line cycle correlated spectral analysis for power measurement systems | |
CN110823517B (zh) | 测量激光反馈系统中反馈因子c的方法 | |
Šíra et al. | Uncertainty analysis of non-coherent sampling phase meter with four parameter sine wave fitting by means of Monte Carlo | |
CN105548935A (zh) | 磁场测量仪分辨率的检测方法和装置 | |
Baccigalupi et al. | Least square procedures to improve the results of the three-parameter sine fitting algorithm | |
JP3516778B2 (ja) | 半導体試験装置における周波数測定方法 | |
CN211178306U (zh) | 一种基于在线修正的桥式振弦应变计 | |
CN108169634A (zh) | 一种精确获得局部放电特高频信号时差的方法 | |
CN106771714B (zh) | 一种配电网电信号传播速度检测方法 | |
Zhmud et al. | Modern ways of high-precision frequency measurements | |
CN105093165A (zh) | 一种数字化电能表脉冲信号的综合测试方法 | |
CN110608664B (zh) | 一种基于在线修正的桥式振弦应变计 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E90F | Notification of reason for final refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20120207 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20120207 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20150206 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20160203 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20170206 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20180205 Year of fee payment: 10 |
|
FPAY | Annual fee payment |
Payment date: 20200205 Year of fee payment: 12 |