SU1464046A1 - Device for measuring amplitude of angular oscillations - Google Patents
Device for measuring amplitude of angular oscillations Download PDFInfo
- Publication number
- SU1464046A1 SU1464046A1 SU874289823A SU4289823A SU1464046A1 SU 1464046 A1 SU1464046 A1 SU 1464046A1 SU 874289823 A SU874289823 A SU 874289823A SU 4289823 A SU4289823 A SU 4289823A SU 1464046 A1 SU1464046 A1 SU 1464046A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- gratings
- photodetector
- radiation
- diffraction
- angular oscillations
- Prior art date
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Изобретение относитс к измерительной технике и может быть использовано дл контрол угловых колебаний при стеновых испытани х. Целью изобретени вл етс повьшение том-- ности за счет устранени вли ни изменени распределени интенсивности в поперечном сечении пучка. Дл этого отраженное от объекта излучение от источника 1 когерентного излучени падает на систему из двух дифракционных решеток 3 и 4 с раз личны- ми периодами, ориентированными так, что штрихи и плоскости решеток парал- -лельны друг другу и перпендикул рны направлению распространени излучени , Интерференциальна картина, измен юща с в области суперпозиции пучков, дифрагированных в одном пор дке на обеих решетках, регистрируетс фотодетектором 5, при колебании объекта измен етс угол падени на решетки 3 и 4 и тем самым обуславливаетс изменение интерференционной картины, которое анализируетс блоком 6. 1 ил. .с 3 шThe invention relates to a measurement technique and can be used to control angular oscillations during wall tests. The aim of the invention is to increase the volume by eliminating the effect of a change in the intensity distribution in the beam cross section. For this, the radiation reflected from the object from the coherent radiation source 1 is incident on a system of two diffraction gratings 3 and 4 with different periods oriented so that the strokes and planes of the gratings are parallel to each other and perpendicular to the direction of radiation propagation. the picture changing in the region of superposition of beams diffracted in the same order on both gratings is recorded by the photodetector 5, when the object oscillates, the angle of incidence on gratings 3 and 4 changes and thereby causes A change in the interference pattern, which is analyzed by block 6. 1 Il. .c 3 w
Description
i - Arcsihi - arcsih
- I- I
де Тde T
- рассто ние между решетками 3 и 4-, d, , г - периоды решеток 3 и 4- the distance between the gratings 3 and 4-, d,, g - the periods of the gratings 3 and 4
соответственно; М показатель преломлени среды, наход щийс решетками}respectively; M is the refractive index of the medium located in gratings}
- длина волны излучени источника 1J К - число зарегистрированных - 1J K source radiation wavelength - number of registered
периодов колебаний N - число интерференционных полос, отсчитанное из периодов колебаний.oscillation periods N is the number of interference fringes measured from oscillation periods.
формула изобретени invention formula
Устройство дл измерени амплитуды угловых колебаний, содержащееAn apparatus for measuring the amplitude of angular oscillations, comprising
источник когерентного излучени , держатель объекта, фотодетектор и блок обработки сигнала и индикации, вход которого соединен с выходом фотоде- ,тектора, отличающеес тем, что, с целью повьшгени точности измерени , оно снабжено двум дифракционными решетками с различными периодами, размещенными по ходу излучени держателем объекта и фотодетектором и ориентированным так, что их плоскости и штрихи параллельны друг другу и нормальны направлению распространени излз чени , а фотодетектор размещен в области пересе - чени п гчков, дифрагировавших в од- ном пор дке дифракции соответственно на первой и второй дифракционных решетках.a coherent radiation source, an object holder, a photodetector and a signal processing and indication unit whose input is connected to the photodetector output, a tector, characterized in that, in order to improve the measurement accuracy, it is equipped with two diffraction gratings with different periods arranged along the radiation path by the holder object and photodetector and oriented so that their planes and strokes are parallel to each other and normal to the direction of propagation of radiation, and the photodetector is located in the region of the intersection of pgchkov, diffraction in one order of diffraction, respectively, on the first and second diffraction gratings.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874289823A SU1464046A1 (en) | 1987-07-27 | 1987-07-27 | Device for measuring amplitude of angular oscillations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874289823A SU1464046A1 (en) | 1987-07-27 | 1987-07-27 | Device for measuring amplitude of angular oscillations |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1464046A1 true SU1464046A1 (en) | 1989-03-07 |
Family
ID=21321597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874289823A SU1464046A1 (en) | 1987-07-27 | 1987-07-27 | Device for measuring amplitude of angular oscillations |
Country Status (1)
Country | Link |
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SU (1) | SU1464046A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0599601A2 (en) * | 1992-11-23 | 1994-06-01 | British Aerospace Public Limited Company | Analysis of vibrating panels |
-
1987
- 1987-07-27 SU SU874289823A patent/SU1464046A1/en active
Non-Patent Citations (1)
Title |
---|
Иориш Ю.И.Виброметри . - М.: Машгиз, 1963, с,580. * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0599601A2 (en) * | 1992-11-23 | 1994-06-01 | British Aerospace Public Limited Company | Analysis of vibrating panels |
EP0599601A3 (en) * | 1992-11-23 | 1995-07-19 | British Aerospace | Analysis of vibrating panels. |
US5515730A (en) * | 1992-11-23 | 1996-05-14 | British Aerospace Plc | Apparatus for detecting the amplitude, frequency or modes of vibration of a vibrating panel |
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