Levels of downsizing RES

Hierarchy and downscaling. It should be borne in mind that downscaling is not an artificial device, but a reflection of the intrinsic properties of complex systems. The main factors contributing to the need to downsize complex RES:

• limited psychophysiological and anthropometric: characteristics require the separation of complex objects into parts, taking into account the capabilities of a person;

• high levels of maintainability and readiness for use as intended; efficient maintenance of complex electronic systems is only possible with the rapid detection and replacement of failed subsystems of a sufficiently high complexity, and not electronic products;

• the disaggregation of the RES allows for the organization of parallel development and manufacture of individual parts, which significantly reduces the time to put the product into operation as a whole;

• in some cases - limiting the dimensions of carrier objects, hardware rooms or compartments.

The most important property of complex systems is that the parts obtained as a result of disaggregation of different systems can be combined into classes, called levels of disaggregation of radio electronic systems. When systems are disaggregated, a hierarchical principle must be followed, according to which the system must be divided into levels so that the subsystems of the senior hierarchical levels generalize the tasks of the younger ones and the subsystems of the younger ones specify the solutions of the senior levels.

Depending on the formulation of the problem, there are various ways of disaggregating the same system. In accordance with GOST 26632-85, the level of disaggregation of a radio electronic device determines functional or structural complexity.

Recall that four levels of disaggregation were introduced according to their functional complexity: radio electronic system, radio electronic complex, radio electronic device, radio electronic functional node. The disintegration of radio-electronic devices by constructive complexity is one of the most responsible and creative stages in the work of a design engineer and requires a deeper consideration.