The mathematical model for the optimal qualities of products during research, design and construct stages.

Research, design and construction represent the various stages involved in the production. During these stages, the standard of product quality degree is highly controlled by the economic factors. Regulations and standards stated by the authority and factory reflecting the qualitative parameters, and their uncertainty degrees are usually defined. The objective of this investigation is to solve the formulated problem of the optimum meaning group of qualitative parameters of the products. In the current study the methods of consecutive and lexicographic have been implemented to formulate the problem as a mathematical model. During the present solution process, the task is in dialogue mode, varying meaning of concession DeltaY,(lambda)(1),DeltaY,(lambda)(2) and nu(rho) at the certain stages of optimization. It is possible to get the whole sets of optimum decisions, which at the further stages of acceptance of decision can be exposed to all technical and economic analysis.