The Study On Decoupling And Digital Rebalance Technique Of Flexibile Gyroscope

The dynamically tuned gyroscope possesses some advantages which are simplestructure , low-cost, easy to be assembled and be manufactured in largequantities and so on. The research stress is mainly laid on improving theprecision , dynamic performance and its operation life , realizingminiaturization and integration between gyroscope and circuit etc. So as thepurpose for guidance, navigation and orientation , dynamically tuned gyroscopeis still widely applied in the field of missile ,aviation,spaceflight ,navigation ,ground measuring , oil drilling and so on .The dynamically tuned gyroscope which is applied in strapdown system mustwork under the condition of closed loop . So the research on the rebalance loopstill has great significance .This thesis concentrates research on rebalanceloop and its application in allusion to certain engineering . Its major contentsinclude :1. The structural characteristics of analog and digital rebalance loop forDTG are analyzed. The advantages and shortcomings of two loops are compared .Thestudy of pulse rebalance loop is determined according to the DTG's structuralcharacterization of the north finder .2.The decoupling method of rebalance loop is emphasized in this thesis.Especially the decoupling method of diagonal matrix is determined to be appliedin the decoupling control of the pulse rebalance loop and the specific designis given. The out decoupling how to realized on computer is also analyzed .3. On the base of analysis of the designing restriction , the hardware circuitof the pulse rebalance loop is given in this thesis.4. Finally the application of the pulse rebalance loop in north finder isdescribed .