THE THEORETICAL ASPECTS AND PRACTICAL FEATURES MULTI-OBJECTIVE OPTIMIZATION OF PROCESSES TO ENSURE THE QUALITY OF REE AT THE MANUFACTURING STAGE

Автори: 
Yu. Bobalo, A. Bondariev, M. Kiselychnyk, O. Nadobko, L. Nedostup, P. Taradakha

Lviv Polytechnic National University

One of the most important scientific and technical problems is to ensure the quality and reliability of technical objects. In this paper the theoretical and practical aspects of modeling and optimization of quality assurance processes of radio electronic equipment (REE) at the manufacturing stage are presented. In modern conditions a hard economic situation of the problem complements the requirement of rational usage of available resources.
REE quality modeling requires the accounting of many processes at all life cycle stages (design, manufacturing, maintenance). Such processes form given, required and relevant properties of REE. The problem is solved by the modeling and optimization of technological processes (TP) of REE manufacturing, in particular by optimization of control procedures on technical and economic criterions.
Mathematical feature of optimization methods using for such TP is a very large number of parameters. Each of parameters (for example, depth of control at all technological operations (TO)) is vectorial, therefore optimization even in one parameter becomes multiparameter. The adaptation of formal mathematical optimization methods to real processes is an independently, difficult and responsible task.
Also in this paper the software (program-methodical complex) for optimization problems of TP and examples of its application are shown. This complex was used to solving problems of modeling, research and optimization of real REE manufacturing processes. This program has been tested on examples of typical manufacturing TP of printed circuit boards with six different technologies, integration chips, the universal oscilloscopes, liquid crystal indicators and other products. Optimization results open the possibility of process control by choosing the optimal (rational) structure, the optimal structure of the system control, formation of appropriate directory of the technological, control and measuring equipment. This generally guarantees the most rational using of all kinds material and technical resources. The results of sensitivity of account technological processes parameters to parameter values of technological operations showed additional opportunities of a program-methodical complex OPTAN on practical results implementation of TP optimization. The received results give the chance by development or upgrade of TP conscious to evaluate risks and the expenses caused by a deviation from best parameters values. These results give opportunity to define the most responsible links of process, quickly to estimate influence of TO parameters correlations of different physical nature on processes expenses of manufacturing and guarantee maintenance.