New Carré Equation

• Autorzy: Almeida Magalhaes Jr P. A. , Smith Neto P. , Almeida Magalhaes C.
• Języki publikacji: EN

Abstrakty

EN

The present work offers new equations for phase evaluation in measurements. Several phase-shifting equations with an arbitrary but constant phase-shift between captured intensity signs are proposed. The equations are similarly derived as the so called Carré equation. The idea is to develop a generalization of the Carré equation that is not restricted to four images. Errors and random noise in the images cannot be eliminated, but the uncertainty due to their effects can be reduced by increasing the number of observations. An experimental analysis of the errors of the technique was made, as well as a detailed analysis of errors of the measurement. The advantages of the proposed equation are its precision in the measures taken, speed of processing and the immunity to noise in signs and images.

Słowa kluczowe

EN

metrology; Moiré techniques; fringe analysis; phase measurement; phase shifting technique; Carré equation

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2010
• Tom: Vol. 17, nr 2
• Strony: 173--194
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Almeida Magalhaes Jr P. A.

autor

Smith Neto P.

autor

Almeida Magalhaes C.

• Pontificia Universidade Catolica de Minas Gerais, Av. Dom Jose Gaspar 500, CEP 30535-610, Belo Horizonte, Minas Gerais, Brazil,

Bibliografia

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