Diagnosis of substances, which characterize the properties of independent observation and control

Abstract

Modern practice of the development of technical systems, and electrical engineering in particular, shows that their
reliability is laid at the design stage and is ensured at the stage of production. The imperfection of production technology and violation of operating modes can lead to the appearance of various defects in the finished systems. Thus, the diagnosis of a technical object (system) must necessarily be present at all stages of its life cycle. Therefore, various works on ensuring the process of diagnosing
the technical system is carried out in its design, manufacturing, testing and operation. At the same time, the purpose of the diagnosis
is to maintain the necessary level of indicators of the technical state of the system. At the design stage, the main task of diagnosing is
to provide the possibility of a potential diagnosis of the system being designed, and at the stage of production and operation, the
current control of its performance. The constant increase in the complexity of technical systems, due to the increase and complication of the functions performed, the improvement of production technology, the increase of requirements to quality indicators, etc.,
leads to the complication of methods and diagnostic tools that provide the necessary properties of systems For the diagnosis of electrical devices, methods such as: peripheral scanning, automatic generation of samples, built-in self-scanning, as well as methods of
parametric identification, fault control methods, evaluation methods, etc. are used. Many of these methods are characterized by the
following disadvantages: significant amount of computations, the need to access all nodes of the electrical circuit, the sensitivity to
the errors of the calculations, and, as a consequence, the complexity of practical implementation. In addition, a significant spread in
the diagnosis of electrical devices acquired a method of reference, based on the finding of a set of values of voltages or currents at
the control points of those of them closest to the values obtained during measurement in the device being diagnosed. Despite the
considerable achievements in the field of diagnosing the technical state of the systems, the relevance of theoretical research and the
practical application of diagnostic methods as the basic principles for ensuring the necessary quality indicators of systems (and electrotechnical, in particular) and increasing the reliability of estimates of the technical condition of the latter remains determinative at
the present time. Conditions of independent monitoring and control are considered and investigated, which ensure the possibility of
conducting a diagnostic experiment without the withdrawal of a controlled system from operation