The analysis of signal-obtaining error factor of sensor in a new type of gyro

The digital signal-obtaining for the new type of gyroscope is given. The single optic-fiber sensor via modulating intensity of light is used as measuring component and mutually orthogonal fixed at the equator plane of rotor, the received light of sensor is modulated by the scheme engraved on the rotor, the angle signal included in receiving light is obtained on the end of sensor. The influence on static transmission properties resulting from the especial working environment (e.g. cryogenic and vacuum) and the measure error because of the reflector shape of rotor, the abnormality of facula from sensor caused by the existence of engraving error, the fixing error of sensor and the error of machine tool´s initial alignment are researched. The mathematic model in every kind of condition is founded, the simulation and relative experiments are done and the outcome is analyzed. The mathematic model and method of compensating technology are studied, some relative experiments are done, the result of study is useful to improve the precision of the signal-obtaining system.