Intelligent system for optoelectronic surface vibration testing

Abstract

Described are results of creation and application of an optoelectronic system, intended for measurements of field of vibrations of objects with complicated surface structure. Principle of vibration measurements is based on displacement measurements of an optical image of the object. Discussed are investigations of errors compensation, which take place because of variations of objects' size and shape, as objects usually emit or reflect different amount of light. Without using of compensation the total error would be about hundreds of percent. This is why all kinds of measurement errors were analyzed, classified, mathematically modeled and there were created special loops for errors compensation. As a result total error of measurement was less that 15% for all conditions of practical usage. In this paper presented also are results of implementation of half-automatical algorithm for adaptation to different kinds of objects during scanning of the object's surface. Discussed are principles of classification of various types of "light functions", specific for various types of objects.