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2013, Volume 15, Issue 1

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Strategic Study of CAE >> 2013, Volume 15, Issue 1

Error analysis and compensation of compound measuring system for blade surface

1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 

2. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China

Funding project：国家重点基础研究发展计划资助项目(2007CB707703)；国家自然科学基金重点项目(90923001)；国家自然科学基金面上项目(51075322) Received: 2012-10-10 Available online: 2013-01-14 15:42:09.000
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Abstract

The high-accuracy measurement of complex airfoil surfaces is a critical issue in the inspection of blades. Aiming at this problem, a compound measuring principle is proposed in this paper. Using the principle, the airfoil surface and root datum of a blade are measured based on contact inductance method and non-contact laser triangular method, respectively. And a four-coordinate measuring system is designed and established. Then, on the basis of the mechanical structure of the measuring system, the geometric error of which is analyzed syste-matically. And a corresponding extraction and compensation method is proposed based on the laser interferometry. The experimental results show that the proposed error analysis and compensation methods can improve the accuracy of the four-coordinate measuring system effectively.

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References

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