Title :
Experimental research on counter-balanced dither mechanism for Ring Laser Gyroscope
Author :
Kedong, Wang ; Qitai, Gu ; Lei, Yan
Author_Institution :
Beijing Key Lab. of Spatial Inf. Integration, Peking Univ., Beijing, China
Abstract :
A set of counter-balanced dither mechanism for Ring Laser Gyroscope (RLG) has been designed to reduce the influence of lock-in of RLG. Designed dither frequency is 344.16Hz. By Finite Element Methodology (FEM) calculation, it is proved that the mechanism mode is reasonable and the strength requirements of the mechanism´s material are satisfied. The error between the actual dither frequency, 316Hz, and the designed is less than 8.2%. In 30 minutes, the stability of dither frequency and amplitude (RMS value) are less than 0.05% and 5% respectively. The horizontal direction of the mechanism is much easier to be influenced by base vibration than the vertical one, but the readout signal is still good for application.
Keywords :
finite element analysis; gyroscopes; microsensors; ring lasers; 30 min; 316 Hz; 344.16 Hz; FEM; Ring Laser Gyroscope; base vibration; counter-balanced dither mechanism; finite element methodology; horizontal direction; readout signal; Computational Intelligence Society; Equations; Frequency; Gyroscopes; Hafnium; Optical design; Remote sensing; Ring lasers; Springs; Vibrations;
Conference_Titel :
Position Location and Navigation Symposium, 2004. PLANS 2004
Print_ISBN :
0-7803-8416-4
DOI :
10.1109/PLANS.2004.1308979
