| The research is sponsored by the National Natural Science Foundation of China (NSFC) in project of "Study of Key Technology and Applied Foundation of Laser-guided measuring robot" (No.50475038).The thesis mainly focuses on the research of accuracy theory of LTS in order to provide theoretical gaide and technical support for the further study and application of Laser-guided measuring robot. On the base of summarizing system composition, working principle, calibration technology, actuality and application of LTS, the causes and characters of random error and system error are analyzed, especially the factors that affect the angle measurement and distance measurement of LTS are studied in the thesis. Based on the above theoretical discussion, the geometrical relationship in the Laser Tracker is revealed and the mathematical models of 11 geometrical errors are derived. The methods of error-separated of five geometrical errors are got. The thesis also studies the fundamental theory of dynamic measurement error. The mathematical models and evaluation parameters in the dynamic measurement error are emphatically analyzed. Finally, a lot of experimental work has been done to verify theoretical analysis by using LTS and Coordinate Measurement Machine (CMM), The experiment include calibration of referenced distance, measuring accuracy of coordinate, angular measuring, distance measuring, uncertainty, environmental stability and incidence-angle measuring of SMR.The experimental results show that the measuring accuracy of LTS can be improved greatly by error analysis and compensation, to decrease or eliminate influencing factors of measuring condition of LTS. The research achievement is significant for application and futher study of LTS. |
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