Errors in reproducing the planar-angle unit with a ring laser

Krivtsov, E. P.; Filatov, Yu. V.

doi:10.1007/bf02110855

Cited by 3 publications

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“…This may be explained by the fact that the RL is sensitive only to rotation in relatio n to inertial space, whereas the angle converter senses vibrations, which thus can contribute a measurement error. A systematic error com ponent may also be caused by the in¯uence of a magnetic ® eld (for example, the Earth' s magnetic ® eld) on the RL, but this error usually does not exceed one microrad (several 0,01 ) [14]. W hen the angle converter is an optical polygon with a null indicator, the systematic component of the calibration error is related to the ¯atness error of the optical polygon faces and can am ount to several microrad (several 0,1 ).…”

Section: Principle Of M Easurem Entmentioning

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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Section: Principle Of M Easurem Entmentioning

confidence: 99%