Dziuba V. Method and means of building a specialized computer system for quality control of technological production processes

The dissertation is devoted to improving the accuracy of control over the quality of production in real time through the development and implementation of a specialized computer system for quality control of technological processes. In the dissertation work, a study of existing methods and computational computer tools for modeling and calculating the parameters of the stress-strain state of thin-walled cylindrical shells of variable thickness, in particular, the method of "stressed" splines and the sweep method and its modification has been carried out. The study has made it possible to identify the main disadvantages of the existing approaches to organizing the production of thin-walled structures with the help of specialized computer systems and ways to eliminate them. To achieve this purpose, a numerical-analytical version of the method of improving the quality control of thin-walled cylindrical shells of variable thickness by organizing an iterative procedure with the use of splines has been developed; the model of a specialized computer system based on the method of quality control of technological processes for the production of thin-walled shells of variable thickness has been improved; rules and algorithms for assessing the speed and accuracy of control of technological processes, which makes it possible to apply them at the software level and allows to assess their effectiveness in the implementation of a specialized computer system, have been developed. Practical significance of the results obtained lies in bringing the obtained scientific results to specific algorithms, models and variants of calculation schemes for a block of specialized software which can be successfully used while improving the existing specialized computer systems as well as constructing the new ones. The developed combined method can be used to solve real scientific, technical and engineering problems, which, in a mathematical formulation, are reduced to boundary value problems of the theory of elasticity. The results obtained have made it possible to increase the accuracy of production quality control in real time, by reducing the number of elementary operations at each iteration by about 5%. Keywords: specialized computer system, technological process, quality control method, thin-walled cylindrical shell of variable thickness, stress-strain state.