M.S. Gubin1

1 Saint-Petersburg State University of Aerospace Instrumentation (St. Petersburg, Russia)

1 gubin.maxim@mail.ru

The article discusses automated eddy current quality control of coating products of complex geometric shape with automatic positioning of the eddy current transducer relative to a curved surface based on feedback. The control method is an amplitude method based on a parametric converter. The impedance acts as an informative parameter. The paper considers the physical foundations of eddy current control, develops an algorithm for controlling the spatial location of the transducer relative to the surface of products of complex geometric shape, and tests the algorithm as part of a robotic nondestructive testing complex.

When monitoring the parameters of defects on curved surfaces, special attention should be paid to the location of the transducer relative to the surface, the use of modern robotic systems, including means of positioning the transducers, allows you to solve the tasks, but their use is limited by outdated software, which is based on a rigidly defined program, as a result, the measured parameters depend on the maximum deviations of the geometry, the positioning errors of the transducer, etc. this makes it impossible to identify defects with minimal disclosure values. The aim of article is to increase the reliability of non-destructive quality control of the ISGF coating by using an algorithm for controlling the spatial location of the converter based on feedback as part of a robotic complex. In the course of the research, an algorithm for controlling the spatial location of the VTP based on feedback was developed. The developed algorithm is used as part of robotic nondestructive testing systems for positioning high-power equipment relative to curved surfaces.

Gubin M.S. Software for automatic converters in technical eddy current testing of products with complex geometric shapes. Information-measuring and Control Systems. 2025. V. 23. № 4. P. 28−35. DOI: https://doi.org/10.18127/j20700814-202504-04 (in Russian)

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