Dynamics simulation analysis of the precision opto-electronic tracking turntable frame

Opto-electronic scouting & tracking device is used to scout the object of hemisphere airspace and trace of movement tract of object in real time. In order to eliminating the moment coupling between pitching shafting and azimuth shafting which affect the precision of the opto-electrical tracking turntable, the dynamics model of horizontal turntable frame was established based on momentum theorem. The dynamics simulation of the fine turntable frame was done using the virtual prototype technology. The theoretical analysis and simulation analysis results show the coupling moment between pitching shafting and azimuth shafting was bring when pitching shafting and azimuth shafting rotate synchronously on high angular velocity or high angular acceleration. It is affect the tracking precision of opto-electrical tracking system. The coupling moment between pitching shafting and azimuth shafting was inexistence when pitching parts has the same moment of inertia relative to inertia principal axis of itself. It provided credible theory for improving design of the opto-electrical tracking turntable.