Nestor N. Statistical modelling of technological processes of radio equipment production by the method of characteristic functions.

The dissertation is devoted to the solution of an important scientific and technical task - the development of economy time-consuming method of analysis of technological processes for the manufacture of radio-electronic devices based on probabilistic-statistical models using characteristic functions. In the work the analysis of the real state of quality assurance of a wide range of radio-electronic devices (RED) was conducted in their serial production field and the main causes of defects in the manufacture of RED and their failure during operation were determined. Based on this analysis, methods were contributed for modelling real processes of forming product quality using the information that the enterprise owns. This approach provides the obtaining of mathematical models that accurately reflect the processes that are typical for the enterprise. The methods of determining the optimal requirements for the quality of materials, semi-finished products, component parts and other resources, which provide the required level of quality of RED with minimum production costs, are offered. The methods of determining the optimum depth of control and rational placement of control operations in the structure of the process, in which the required level of quality of products at the minimum production costs is ensured. On the basis of the proposed methods and models a prototype of a package of procedures for the analysis of technological processes of RED production was developed, with the help of which predicted quality indicators of finished products were obtained, which confirm the adequacy of the proposed models and methods. The contributed models and methods of quality formation and quality controlling processes optimization are characterized by flexibility and can be used to optimize the production of a wide range of RED, which are produced serially.