The forming of serviceability’s estimation parameters of nonlinear executive devices

Abstract

The efficient condition of technical devices (TD) assumes these devices’ performance of set functions, keeping key parameters (KP) within the limits, established by normative and technical documentation. When defining the TD working capacity, on the basis of straight (and also possibly indirect) measurements, there are defined the quantity of efficient N1 and disabled N2 conditions of the given TD. In the situations, when the corresponding measurements represent certain difficulties, then, in defining the working capacity are also used other ways. One of them assumes the KP definition on the basis of existing dependences between these parameters and temporary characteristic parameters of transients, or on the basis of dependences between KP and parameters of peak-frequency or peak phase-frequency characteristics. Another way is the defining of some integral parameters, which as a result also reflect the KP condition. The mentioned approaches are acceptable and are used both at test and at functional diagnostics. [1] Both in first and second cases, it is important for the used mathematical device to be adequate both for TD working capacity estimation, and for the analysis of their functioning. In the case of linear technical objects (LТО) the dependences between parameters of temporary and frequency characteristics and their KP are established without special difficulties. It has predetermined the wide use of the mentioned dependences at designing the diagnostic systems.