Abstract
The paper considers the generalized structure of maintenance system, including, in the general case, the protection subsystem, the functional diagnostics subsystem, the test diagnostics subsystem, the maintenance and repair subsystem. The technical implementation of the listed subsystems is possible in the form of tools built into the object and in the form of tools external to the object. For the generalized structure of the transport and technological machines maintenance system, the possible ratios of the volumetric characteristics of built-in and external subsystems are analyzed (using the simplest analytical expression). The possibility of formalizing the control process of a generalized system of technical maintenance of autonomous objects within the framework of a finite-automaton model is discussed. In accordance with this model, it is proposed, first, to consider the on-board maintenance system as an operational automaton; second, each of its subsystems should be considered as a separate internal automaton that implements its own technological algorithm; third, the interaction of the four automata should be organized within the control automaton for the above-mentioned operating automaton. The algorithm for the functioning of this control automaton has been synthesized.
Highlights
The complex property "reliability" is one of the most important of the infinite set of properties for transport and technological machines
Such a cycle is implemented in a certain system, which is usually called a reliability assurance system and distinguishes a reliability design system in it, a production and technological system and a maintenance system (MS)
A generalized version of the MS structure is a four-circuit control system shown in Figure 1 [1]
Summary
The complex property "reliability" is one of the most important of the infinite set of properties for transport and technological machines. Subsystem С3 based on the information analysis about the inputs X and outputss Y the object assesses the current technical condition (ТС) and when it goes beyond the permissible limits, forms a control action U3 (activates backup capabilities) and / or transmits information about ТС deviation from the norm to subsystems С1 or С2 Such systems are called control systems or functional diagnostics systems and they, as a rule, are partially built into the object. Subsystem С2 has the ability to actively influence Т to an object through functional or other input channels, to perceive its reaction RT on this effect from the output functional channels or from special control points and from the analysis Т and RT assess the technical condition in the form of a diagnosis D It is called a test diagnostics system and, in most cases, it exists separately from the object. It is almost always external to the object, and it is customary to call it a maintenance and repair subsystem
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