Abstract：Digital posture adjustment and assembly positioning technology of large parts of the aircraft is widely used, some application systems is used in the assembly worksites. However, during the course of the aircraft assembly positioning, the different choice of the measuring points will cause different aircraft state. Parts machining, assembly, measuring equipment, etc. will also bring error, that makes deviation between the state of the practical position and the theoretical state of the aircraft, and the aircraft can not be positioned right for the next operation. To minimize the error of the aircraft positioning and improve the efficiency, a kind of virtual aircraft position estimation system using on digital assembly is applied, from the analysis of the measuring data during the aircraft poisoning, this virtual aircraft position estimation system can be practically used during the positioning of the aircraft.
2011, 
