 | Duer, Stanislaw |
 |
 | Artificial Neural Network-based Technique for Operation Process Control of a Technical Object
Author : Duer, Stanislaw
Source : Defence Science Journal ; Vol:59(3) ; 2009 ; pp 305-313
Subject : 681.3:355 Computer Applications in Defence
Keywords : Technical operation;Control systems;Technical diagnostics;Neural networks;Knowledge bases;ANN;Artificial neural network;Radr system
Abstract : This paper presents a method to control an operation process of a complex technical object, a radar system, using trivalent diagnostic information. Also, a general diagram of the complex technical object has been presented, and its internal structure has been described. A diagnostic analysis has been conducted, as a result of which, sets of the functional elements of the object and its diagnostic signals have been determined. Also, the methodology for the diagnostic examination of the technical system has been presented. The result is 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. The theoretical results obtained in the present study have been verified in practice on a radar system. The radar system in question is a complex and reparable technical object. It belongs to the group of technical equipment for which a short time of shutdowns is required (an ineffective use of the object). A DIAG computer program was used in the diagnosis process of the radar system. The final results obtained through computations conducted by the DIAG software have been presented in the Table 1. |
| | Expert Knowledge Base to Support Maintenance of a Radar System
Author : Duer, Stanislaw
Source : Defence Science Journal ; Vol:60(5) ; 2010 ; pp 531-540
Subject : 621.38 Electronics;Defence Science Journal
Keywords : Maintenance process;expert system;knowledge base;diagnostic information
Abstract : This paper presents the method for the creation of an expert knowledge base of a military object, for example a radar system. Such a knowldge base can be widely used to support the process of the maintenance of a complex technical object. The first step is a maintenance evaluation of the object. During this kind of analysis, it is necessary to perform the grouping and classification of the functional elements of the object. It is realised using the functional scheme of the object presented. Further, diagnostic information is combined with specialised expertsÂ’ knowledge and transformed it into a set of servicing information. The participation of experts in the process of expert knowledge base preparation is significant. The purpose is to capture information that will be a fundamental for the design of a maintenance system dedicated to the particular technical object. The methods proposed were verified with appropriate examples, in which the set of specialised diagnostic information of the object was determined. |
|
