AUTOMATED SYSTEM FOR CONTROLLING SURFACE ROUGHNESS PARAMETERS USING LASER TRIANGULATION
DOI:
https://doi.org/10.20998/2078-7405.2026.104.08Keywords:
roughness parameter control, laser triangulation, non-contact measurements, production automation, CMOS matrix, signal filteringAbstract
The article discusses the development of an automated system for controlling the surface roughness parameters of parts, integrated directly into the machining process on CNC machines. The relevance of the study is due to the increasing requirements for the quality of surfaces that determine the operational characteristics of products, in particular wear resistance, tightness and strength of joints. The object of the study is the process of non-contact measurement of the surface microprofile by the laser triangulation method. The paper proposes a method for determining the microrelief parameters based on the analysis of the laser spot displacement on the CMOS matrix. To increase the accuracy, an algorithm for subpixel determination of the signal energy center and digital filtering using a Butterworth filter are used, which allows minimizing the impact of noise, vibrations and production interference. The results obtained confirm the effectiveness of the proposed approach and allow reducing the percentage of defects by 12–15%. The proposed system corresponds to the concept of Industry 4.0 and contributes to increasing the level of production automation.
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