Diagnostic system with an artificial neural network which determines a diagnostic information for the servicing of a reparable technical object

Abstract

In this paper, the features of a diagnostic measurement setup have been determined. The purpose of the setup was registration of diagnostic signals taken from an electronically controlled gasoline-powered engine. Special attention has been paid to the presentation of the features of an analog-digital converter card used, as well as to the possibility of its practical use. Another important aspect is the design and programming of computer software dedicated for action along with the setup. The results of the work have been presented using the example of the engine's microprocessor control module. A diagnostic analysis was conducted, as a result of which sets of the functional elements of the object and its diagnostic signals were determined. Also, the methodology of the diagnostic examination of the technical system was presented. The result was a functional and diagnostic model, which constituted the basis for initial diagnostic information, which is provided by the sets of information concerning the elements of the basic modules and their output signals.

Teaching methodology of the diagnosing process on the example of the fire alarm system

“…Pomocne w tym działaniu są tabele diagnostyczne (patrz przykładowa tabela nr 5), które studenci są zobowiązani uzupełnić określonymi zapisami [1,2,4,6,11,16,17,19].…”

Analyses of the method development of decisions in an expert system with the use of information from an artificial neural network

“…It is only in the second stage that the quality of these preventive procedures is assessed on the basis of control diagnosing of the object after the preventive procedures have been conducted. The diagnosing of a control object is performed in a diagnostic system with the use of the (DIAG) neural network [4][5][6][7]. It was assumed in the experimental examination of the preventive procedures of the object that each of the three inference methods has an influence on the preventive procedures in such a way that it guarantees a full regeneration of the object.…”

Creating of structure of facts for the knowledge base of an expert system for wind power plant's equipment diagnosis

“…The paper by (Duer 2010 [4,14,[20][21][22][23][24][25], makes the use more specific (and improved) of the results of diagnostic testing in the organization of a technical object's maintenance system. The paper presents the mechanism of a negative change of states in a technical object, as a result of which there occurs in the object a reduction of its operational properties: a change of the state.…”

“…The (WPP) was designed to be located in the north of Poland, that is to say, in the 1 st grade wind energy zone in Poland. The (HV) Substation was designed as power output into the grid [11,[20][21][22][23]. The Wind Farm Substation is connected into the Grid Operator's Substation at the (PCC) by means of a (HV) cable power line.…”

“…2). To make diagnostic evaluation of the technical object, it requires possessing diagnostic and engineering knowledge on construction, operation, and diagnosis of such technical objects [11,[20][21][22][23] This section presents information by its stages due to a multilevel way of transformation of information on the object into a form of an expert knowledge. Stage 1 is a presentation of a fundamental theory relating to functioning and operation of (WTG) and (WPP's) equipment.…”