Michelson Interferometer Based Displacement Measurement Using Video Processing

Abstract

In this study, investigation of video processing method which is a new technique for precision displacement measurement is presented. The video processing method was integrated with an interferometric system and the thermal expansion results and linear thermal expansion coecients of a heated sample metals were compared with theoretical results. Michelson interferometer setup was used in our study due to its advantages in precision displacement information of a visual output, called interferograms. In the experimental studies, signals of interferograms containing displacement information were obtained from the measurement system. The amount of displacement in the sample metals under the temperature variation due to thermal expansion was measured with the analysis program, written in Matlab/Simulink environment, with a micrometer precision. The measured displacement amounts were compared with the results of theoretical calculations. According to the theoretical values, the relative error of the values measured with video processing based method, was found found to be 0.3%

CNC Freze Makinalarında İş Parçasının Talaş Derinliğindeki Değişimin İnterferometrik Temassız Ölçümü

“…Piyasada çeĢitli mercek araĢtırmaları yaparken karĢılaĢılan terimler ve açıklamaları ġekil 3.11"de görülmektedir. Ģeklinde hesaplanabilir [12,13].…”

“…Tablo 5.1 Takım Tezgâh Ünitesinin Mekanik Parça Listesi [11] Parça No Parça adı C 1 Tek fazlı DC motor C 2 Motor etiketi C 3 ĠĢleyici kafayı taĢıyıcı mil C 4 ĠĢleyici kafa üzerindeki açı taksimatı C 5 ĠĢleyici kafa sıkıĢtırma vidası C 6 ĠĢleyici kafa uç yuvası C 7 Ana sütun C 8 Tabla C 9 Mengene C 10 X, Y, Z, eksen motorları C 11 Redüktör C 12 DiĢli kutuları ayar vidaları C 13 Tezgâh kaidesi…”

Investigation of Data Mining Processing Stage Effect on Performance in Interferometric Measurement System

“…These features are emerging as a significant advantage against other displacement measurement systems such as dilatometric and capacitive [1][2][3]. Displacement sign which is received from an interferometric system can be analyzed by various techniques [4]. Electronic counter circuit is used in the fringe counting technique, bright fringes in interferogram sign is detected by photoreceptor as resulting of excitation light.…”

“…Another drawback is the generating incorrect photo signal because of the high level darkness in the bright-dark fringe transition. To eliminate this disadvantage often emerges as a complex electronic circuit design requirements [4]. Image processing technique can be used in displacement amount.…”

“…The use of various filtering techniques are required in order to eliminate deterioration of the image signal. This technique has the disadvantage that the amount of video signal and analysis time [4]. The quality of the data which is used in data mining will affect the results.…”