링레이저 자이로의 플렉셔 각도측정과 플렉셔 오차개선 연구

Abstract

Flexure measurement of ring laser gyro was investigated by using an interferometer. A two-beam interferometer of Fiezo-fringe pattern was used for the flexure angle measurement in higher acceleration environments than 1-gravity acceleration. These environments were made with the addition of dummy mass to the ring laser gyro axis. The flexure angle change for 1-gravity acceleration change was measured as 2.37 arcsec/g with low repeatability error of 0.07 arcsec/g. The laser navigation system consisting of 3 flexure-reduced ring laser gyros showed the improvement of flexure error.