New sense-finding and subdividing technique for high speed moire fringes

Huaiqiong Li; Qian Chen; Canlin Zhang

doi:10.1117/12.676536

19 May 2006 New sense-finding and subdividing technique for high speed moire fringes

Huaiqiong Li, Qian Chen, Canlin Zhang

Proceedings Volume 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 615025 (2006) https://doi.org/10.1117/12.676536
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

A new sense-finding and subdividing technique based on high speed Moire fringes is presented in this paper. Direct Current(DC) component and drift are picked-up by using of Field Programmable Gate Array (FPGA), and the input signal of sense-finding is corrected. The motion sense-finding of Moire fringes and four folds Moire fringes subdivision are completed. With the aid of high speed Central Processing Unit (CPU), the new synthetic trigonometric function is reconstructed by software. Combining with synthetic trigonometric function and original input signals, the quadrant location of synthetic trigonometric function is confirmed. The precision sense-finding and high-precision subdividing for Moire fringes are completed by division of synthetic trigonometric function range. The high speed and high-precision measurement based on Moire fringes is implemented.

Citation Download Citation

Huaiqiong Li, Qian Chen, and Canlin Zhang "New sense-finding and subdividing technique for high speed moire fringes", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615025 (19 May 2006); https://doi.org/10.1117/12.676536

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