METHOD OF ULTRASONIC PHASE TWO-COORDINATE INFORMATION REGISTRATION FOR AUTOMATED NON-DESTRUCTIVE TESTING SYSTEMS

The article is devoted to the issue of improving coordinate registration information in means automated non-destructive testing. Existing systems non-contact spatial position sensors testing are mostly focused on use signal fields different physical nature, for example, acoustic or optical, which created around these and amplitude methods processing. These do not provide necessary accuracy determining coordinates case using small-aperture testing.
 basis proposed technical solution trilateration method. distance between emitter ultrasonic vibration, structurally connected sensor, two receivers determined by phase This method provides increased sensor. Eliminating ambiguity measurements based combination multi-frequency numerical system residual classes. makes it possible minimize probability incorrect resolution results ensure high determination (with an absolute error order mm). idea main calculation formulas that make determine modules classes values operating frequencies oscillations presented. Matching discretes shifts signals with at reduce task restoring integers positional counting from their representation residuals mechanism occurrence gross errors recovery whole numbers considered. An algorithm eliminating this proposed. In general, correctness sensor confirmed simulation results. considered two-coordinate can be used both development new testing, improvement existing ones, involve a manual scanning surface objects.