A new error compensation strategy on Laser Displacement Sensor in free-form surface measurement

Bin Sun; Bing Li

doi:10.1117/12.2214879

12 October 2015 A new error compensation strategy on Laser Displacement Sensor in free-form surface measurement

Bin Sun, Bing Li

Proceedings Volume 9633, Optifab 2015; 96332N (2015) https://doi.org/10.1117/12.2214879
Event: SPIE Optifab, 2015, Rochester, New York, United States

Abstract

The Laser Displacement Sensor is designed according to the principle of laser triangulation. It is a precise geometric measurement sensor, and it is characterized by non-contact and high measuring efficiency. However, the measurement accuracy of the LDS is easily influenced by other factors, especially for free-form surfaces where the incidence angle has greater impact on measurement accuracy and the research is relatively less. The paper proposes a new error compensation strategy and the method of calculating incidence angle. It can effectively improve the measurement accuracy of free-form surfaces by inclination error compensation. The experiment verifies the correctness and reliability of the error model by using a Laser Interferometer. The result shows that the measurement accuracy is less than 10μm.

Citation Download Citation

Bin Sun and Bing Li "A new error compensation strategy on Laser Displacement Sensor in free-form surface measurement", Proc. SPIE 9633, Optifab 2015, 96332N (12 October 2015); https://doi.org/10.1117/12.2214879

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