Research On Aircraft Digital Measurement And Quality Control Technology

With the continuous development of science and technology, aircraft manufacturing industry is the rapid advance. The digital measurement technology has started to enter the field of aircraft manufacturing, and become a trend to play a role in testing, assembly, calibration, and other fields. Calibration to achieve the aircraft digital level measurement and avionics installation calibration of high quality, high efficient, the aircraft digital measurement network which mixes the advance of the iGPS and Laser Radar measurement technology is proposed. In order to improve the measurement accuracy of the network, and ensure the quality of aircraft digital measurement, the aircraft digital measurement uncertainty and measurement quality control techniques are.studied deeply1) The key technologies of aircraft digital measurement are studied:including aircraft digital level measurement and calibration system; digital levelling technology; aircraft digital level measurement and avionics equipment installation calibration techniques, and the corresponding digital measurement uncertainty models.2) iGPS network measurement technology and uncertainty are studied:it introduces the measurement principle of the iGPS laser transmitter, and its measurement and uncertainty mathematical model; it conducts the iGPS multi-station measurement network transmitter orientation calibration technique and mathematical model; it in-depth study the measurement principle of the iGPS dual-transmitter measurement unit, which measurement model and uncertainty model are derived, and which measuring and station distribution characteristics simulation and analysis are done; iGPS muti-transmitter measurement principle is put forward, and which measurement mathematical model and uncertainty model are established.3) Based on the study of Laser Radar measurement system working principle, the point measurement model and the uncertainty model of Laser Radar are created.4) It study the measurement network building technology, including laser radar jumping technology, laser radar multi-station network integration technology, and iGPS and Laser radar coordinate system integration technology, to ensure the accuracy of the measurement network.5) aircraft digital measurement network uncertainty and network optimization techniques are studied:it creats aircraft digital leveling transform algorithm, and establishs the measurement uncertainty model, which provides a mathematical basis for the aircraft digital measuring quality control; research on aircraft measuring regional distribution technology, and measurement network station distribution optimization technology based on genetic algorithm is to achieve the aircraft digital measurement network optimization, and ensure the quality of aircraft digital measurement.6) The measurement system calibration experiment, aircraft level measurement experimental, and aircraft screen display installation calibration experiment are done. The experimental results show that the measurement accuracy to meet the requirement.This measurement program, measurement methods have been successfully applied to the practical engineering of a particular model of aircraft digital measurement. The measurement quality control technique for aircraft digital measurement has important practical value.