Vibration Measurement Method of a String in Transversal Motion by Using a PSD
A position sensitive detector (PSD) is frequently used for the measurement of a one-dimensional position along a line or a two-dimensional position on a plane, but is more often used for measuring static or quasi-static positions. Along with its quick response when measuring short time-spans in the...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2017-07-01
|
Series: | Sensors |
Subjects: | |
Online Access: | https://www.mdpi.com/1424-8220/17/7/1643 |
id |
doaj-f88cfbffe62246efb13d4be1bfa4e110 |
---|---|
record_format |
Article |
spelling |
doaj-f88cfbffe62246efb13d4be1bfa4e1102020-11-25T00:46:48ZengMDPI AGSensors1424-82202017-07-01177164310.3390/s17071643s17071643Vibration Measurement Method of a String in Transversal Motion by Using a PSDChe-Hua Yang0Tai-Chieh Wu1Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 10608, TaiwanGraduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 10608, TaiwanA position sensitive detector (PSD) is frequently used for the measurement of a one-dimensional position along a line or a two-dimensional position on a plane, but is more often used for measuring static or quasi-static positions. Along with its quick response when measuring short time-spans in the micro-second realm, a PSD is also capable of detecting the dynamic positions of moving objects. In this paper, theoretical modeling and experiments are conducted to explore the frequency characteristics of a vibrating string while moving transversely across a one-dimensional PSD. The theoretical predictions are supported by the experiments. When the string vibrates at its natural frequency while moving transversely, the PSD will detect two frequencies near this natural frequency; one frequency is higher than the natural frequency and the other is lower. Deviations in these two frequencies, which differ from the string’s natural frequency, increase while the speed of motion increases.https://www.mdpi.com/1424-8220/17/7/1643position sensitive detector (PSD)dynamic natural frequency measurementvibration analyze |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Che-Hua Yang Tai-Chieh Wu |
spellingShingle |
Che-Hua Yang Tai-Chieh Wu Vibration Measurement Method of a String in Transversal Motion by Using a PSD Sensors position sensitive detector (PSD) dynamic natural frequency measurement vibration analyze |
author_facet |
Che-Hua Yang Tai-Chieh Wu |
author_sort |
Che-Hua Yang |
title |
Vibration Measurement Method of a String in Transversal Motion by Using a PSD |
title_short |
Vibration Measurement Method of a String in Transversal Motion by Using a PSD |
title_full |
Vibration Measurement Method of a String in Transversal Motion by Using a PSD |
title_fullStr |
Vibration Measurement Method of a String in Transversal Motion by Using a PSD |
title_full_unstemmed |
Vibration Measurement Method of a String in Transversal Motion by Using a PSD |
title_sort |
vibration measurement method of a string in transversal motion by using a psd |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2017-07-01 |
description |
A position sensitive detector (PSD) is frequently used for the measurement of a one-dimensional position along a line or a two-dimensional position on a plane, but is more often used for measuring static or quasi-static positions. Along with its quick response when measuring short time-spans in the micro-second realm, a PSD is also capable of detecting the dynamic positions of moving objects. In this paper, theoretical modeling and experiments are conducted to explore the frequency characteristics of a vibrating string while moving transversely across a one-dimensional PSD. The theoretical predictions are supported by the experiments. When the string vibrates at its natural frequency while moving transversely, the PSD will detect two frequencies near this natural frequency; one frequency is higher than the natural frequency and the other is lower. Deviations in these two frequencies, which differ from the string’s natural frequency, increase while the speed of motion increases. |
topic |
position sensitive detector (PSD) dynamic natural frequency measurement vibration analyze |
url |
https://www.mdpi.com/1424-8220/17/7/1643 |
work_keys_str_mv |
AT chehuayang vibrationmeasurementmethodofastringintransversalmotionbyusingapsd AT taichiehwu vibrationmeasurementmethodofastringintransversalmotionbyusingapsd |
_version_ |
1725262939545403392 |