Abstract
In this paper the authors propose an original method of the numerical evaluation of checkup sets for the technical condition of an agricultural tractor. Information entropy required in diagnostic tests for a specific checkup set was used as the evaluation criterion. A formal description is given for the technical condition diagnostics of a tractor in its operation period, which is characterised by a high rate of average damage. The structural model was constructed using information entropy. This model accumulates the number of checkups, probability of specific damage types and assigns them a common numerical measure. The conducted logic analysis of the proposed method and the results obtained in experiments on its practical applicability in service stations indicate that the method adequately describes this area of machine operation and thus may be a measure of information effectiveness for checkup sets determining the machine technical condition.
Highlights
In order to ensure efficient machine operation processes various decisions need to be made on an on-going basis and their accuracy is a function of the amount and quality of available information on the process itself and on its environment
This paper presents a method to evaluate checkup sets in order to diagnose the technical condition of a tractor, after the occurrence of a specific signal using information entropy
A problem faced within this study is connected with a lack of an objective, numerical valuation of checkup sets based on the criterion of the amount of information required for the determination of the technical condition of tractors using these sets or tests
Summary
In order to ensure efficient machine operation processes various decisions need to be made on an on-going basis and their accuracy is a function of the amount and quality of available information on the process itself and on its environment. The efficiency of performance in the case of technical objects is defined as the degree, to which they meet reliability, economic, quality requirements, etc., within a specific period of time in relation to incurred outlays or inputs [7] Based on these requirements specific operation strategies are implemented, covering machine use and servicing processes as well as their interdependencies evaluated according to specific criteria [10]. Structural formal models are constructed for diagnostic processes in order to conduct simulation studies and evaluate their efficiency based on various criteria These problems include the theory of construction of diagnostic tests [13], using e.g. the matrix method, the deletion method, etc. (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl
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