Identification Of The Error Model Of The Floated Gyroscope Based On Rotation Method

The floated gyroscope sets up the reference coordinate,which is the key part of the inertial navigation system.Its performance and precision determine the performance and precision of the inertial navigation system.Its advantages are high precision,high reliability and long lifecycle.It is widely applied in the fields of military and civilian,such as aeronautics field,space field,maritime field and so on.The precision of the floated gyroscope should be further improved,which meets the needs of high precision of the inertial navigation system in future.Also,the error model of the floated gyroscope is required to accurately reflect the long term trend.Therefore,the error model of the floated gyroscope is identified more comprehensively and more accurately,and the application precision of the inertial navigation system is improved.This paper mainly uses the rotation method provided by the rate turntable to identify the error model of the floated gyroscope,so as to quickly establish the accurate error model of the gyroscope to improve its application precision.Firstly,the working principle of the floated integral gyroscope is introduced,and its error model is derived,and the factors affecting the error coefficient are analyzed,and the identification method of the gyroscope error coefficient is compared.Secondly,according to the error model of the floated gyroscope,the identification formula of the gyroscope error coefficient based on the rotation method is derived,which builds the theoretical basis for the rapid identification of the gyroscope error coefficient.Then,in order to verify the accuracy of the identification method of gyroscope error coefficient based on rotation mode,the identification circumstance of gyroscope coefficient is built,and the test of the identification method of gyroscope error coefficient based on rotation mode is completed.Finally,the test results are compared with the current method of the error coefficient of the floated gyroscope to verify the correctness of the identification method,which provides a rapid way to comprehensively identify error model of the floated gyroscope.