An interference-type null detector for the angular position of an object

Krivtsov, E. P.; Pavlov, P. A.; Filatov, Yu. V.; Yudin, A. M.

doi:10.1007/bf00864082

Cited by 4 publications

(4 citation statements)

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“…6 To calibrate DG, the 24-facet prism from the etalons set of the plane angle unit value was installed on DG rotor. Procedure of transmission and comparisons by using PP is well developed for static measurements, when autocollimator is used as a reading means.…”

Section: Studies Of Dynamic Goniometer Metrological Characteristicsmentioning

confidence: 99%

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Dynamic goniometer for industrial applications

2016

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At the present time, there is a need for effective metrological control of the functional parameters of the modern rotary encoders due to their increased production level. This metrological control has to be carried out with high accuracy and high speed of operation. One of the most effective ways of solving this task is the use of dynamic goniometer (DG) jointly with an optical angle encoder and/or ring laser. The article deals with the principles of DG construction and considers the methods and results of DG investigation for the rotary encoder calibration as well as the elimination procedure of various types of DG uncertainties. The article shows that application of the proposed procedure allows to reduce the level of DG uncertainty to 0.2 arcsec, which ensures the uncertainty value of the rotary encoder metrological control by the means of DG to within 0.05 arcsec in a wide range of angular velocities. Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 07/02/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 091405-2 September 2016 • Vol. 55(9) Ivaschenko, Pavlov, and Pukhova: Dynamic goniometer for industrial applications Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 07/02/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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Section: Studies Of Dynamic Goniometer Metrological Characteristicsmentioning

confidence: 99%

“…6 2. Uncertainty of A type of the optical ND caused by the internal and external random factors, such as the noise of photodetectors and changes of the refractive index of the medium where ND radiation propagates.…”

Section: Additional Sources Of Uncertaintymentioning

confidence: 99%

Dynamic goniometer for industrial applications

2016

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“…The measurements with the EUP-1L were carried out using an interfe rential null indicator (NI) [18,19]. This contained an incandescent lamp as light source and a photodiode as receiver.…”

Section: Optical Polygon Calibrationmentioning

confidence: 99%

Dynamic angle measurement by means of a ring laser

1997

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A ring laser goniometer was investigated in different applications of precision angle measurement, such as the calibration of optical polygons and optical encoders, external angle measurement of rotatin g objects and inertia l angle measurement by rotatio n of the goniometer itself. The results agree with standard methods of angle measurement to about 0,5 m rad (0,1 ). Further im provem ent in accuracy is expected mainly from the reduction of noise in the mechanical and electrical setup of the measurement system.

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“…The null-indicator 6 is an optical device that binds the reflecting faces of the measured prismatic measures to the scale of the dynamic goniometer. For quite a long time, without alternative, the highest accuracy of angular measurements was provided by the interference-type null-indicator (INI) 7 . But due to its high sensitivity to the quality of the perceived wavefront, the scope of application of dynamic goniometric systems based on it was limited.…”

Section: Introductionmentioning

confidence: 99%

Dynamic angle measurements involving different optical null-indicator types

Larichev,

Filatov,

Venediktov

2023

Optical Metrology and Inspection for Industrial Applications X

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An interference-type null detector for the angular position of an object

Cited by 4 publications

References 0 publications

Dynamic goniometer for industrial applications

Dynamic goniometer for industrial applications

Dynamic angle measurement by means of a ring laser

Dynamic angle measurements involving different optical null-indicator types

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