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An electrohydraulic servo actuator is used as an example to show how numerical data on the parameters of the components and assembly units supplied to the assembly section allow control of the assembly process, its qualitative transformation, and refinement of the characteristics of finished products. The described approach to the arrangement of the assembly process may be applied to any product both to ensure that nondefective items are assembled in manufacturing components with apparently extended parameter tolerance ranges and to enhance the characteristics and reduce labor input in the adjustment of products.

Estimation and prediction of the parametric reliability of electro-pneumatic valves for complex gas industry automation systems on the basis of degradation failure are considered. The proposed technique is based on computational determination of the technical characteristics of electro-pneumatic valves and may be used to estimate and predict the parametric reliability of these devices in the case where it is not possible to establish the real values of the technical characteristics. Stages in the development of the technique are considered and problems involved in the estimation and prediction of the reliability of electro-pneumatic valves at different stages of their life cycle are presented.