THE REAL CAPABILITIES OF THE PHOTOGRAMMETRIC AND THE STEREOPHOTOGRAMMETRIC METHODS FOR MEASUREMENT IN MECHANICAL AND MANUFACTURING ENGINEERING

Boris Sakakushev; Svetlin Parvanov; Tzvetelin Gueorguiev

THE REAL CAPABILITIES OF THE PHOTOGRAMMETRIC AND THE STEREOPHOTOGRAMMETRIC METHODS FOR MEASUREMENT IN MECHANICAL AND MANUFACTURING ENGINEERING

Boris Sakakushev¹, Svetlin Parvanov² and Tzvetelin Gueorguiev³
¹Assoc Prof. Dr., University of Rouse "A. Kanchev", The Bulgaria, bsak@uni-ruse.bg
²Chief Assist. Prof. Dr., University of Rouse "A. Kanchev", The Bulgaria, sparvanov@uni-ruse.bg
³Chief Assist. Prof. Dr., University of Rouse "A. Kanchev", The Bulgaria, tzgeorgiev@uni-ruse.bg

Abstract

The paper presents the research results of the team of authors in the application of the photogrammetric method from its initial phase to its present condition for measuring small and large dimensions in fine mechanics and technics, as well as the established theoretical bases for the application of this method for measurement of deformations in mechanical constructions and parts. Presented are the main influencing factors that have critical influence on the measurement accuracy characteristics, and determine the uncertainty budget. The typical errors of the method are outlined for certain conditions of its application and when using specific equipment. Recommendations how to decrease these errors are made. The paper devotes special attention to the initial phase of applying the stereo photogrammetric method for measurement of large dimensions and deformations in mechanical and manufacturing engineering. Presented are the main dependencies of the method by analyzing the constituent components. According to the authors, this method has a bright future for application in manufacturing and construction engineering. The goals for continual research are set out for determining the accuracy characteristics of the methods and for widening the range of their application. Recommendations are made in relation to the main characteristics, the equipment requirements and the application of these methods in real conditions.

Keywords: photogrammetric method, stereo photogrammetric method, small dimensions, large dimensions, measurement error, uncertainty budget.