Title :
Realization on identification and compensation methods for the temperature model of hemispherical resonator gyro (HRG)
Author :
Yangguang Xie ; Guoxing Yi ; Yansheng Jia ; Changhong Wang
Author_Institution :
Space Control & Inertia Technol. Res. Center, Harbin Inst. of Technol., Harbin, China
Abstract :
In view of technological requirement of the long life satellite, influence of temperature variation on zero bias of HRG is investigated. By testing the temperature of HRG, it can be seen that great influence on gyro bias are caused by temperature variation, which does not satisfy the accuracy requirement. For different application fields, the time series analysis method with multiple variables and limited memory recursive least square algorithm are employed, respectively. Moreover, based on the data detected, the parameters of the constructed model are identified. Then, the timeliness and the accuracy of the two algorithms are compared. Finally, by detecting multiple sets of data, the comparison results between the two models denote that temperature drift is compensated accurately and the effectiveness of the constructed model is indicated.
Keywords :
gyroscopes; least squares approximations; recursive estimation; resonators; time series; compensation methods; gyrobias; hemispherical resonator gyro; identification methods; recursive least square algorithm; temperature model; temperature variation; time series analysis; Analytical models; Computational modeling; Data models; Oscillators; Temperature distribution; Temperature measurement; Time series analysis; AR modeling; HRG; limited memory; recursive least square algorithm; time series analysis;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang, China
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6023187
