https://doi.org/10.25198/2077-7175-2020-1-106
IMPROVING THE INFORMATION CONTENT OF THE DIAGNOSTIC PARAMETER OF A CAR GEARBOX
E. A. Penkov1, R. F. Kalimullin2, V. A. Sologub3
Orenburg State University, Orenburg, Russia
1e-mail: pea-1i@mail.ru
2e-mail: rkalimullin@mail.ru
3e-mail: v_arsentich@mail.ru
Abstract. Modern requirements for the operation of automobiles lead to the need to increase the efficiency of their maintenance, and technical diagnostics play an important role, it provides information on the technical condition of a particular element with minimal resources. In turn, the diagnosis is sensitive to the quality of the diagnostic parameter, i.e. its information content should be as high as possible. In this regard, the work considers a method for improving the quality of a diagnostic parameter. It is known that a diagnostic parameter must meet several requirements. The most important requirement is in formativeness, which shows a decrease in uncertainty about the technical condition of the object, represented by a priori entropy after applying information from this diagnostic parameter, measured during the diagnosis. There are methods for converting a diagnostic parameter that can, to varying degrees, get rid of the noise included in its composition, or present it in such a way that its analysis is facilitated. The work considers the adaptive filtering method and concludes that it has the greatest potential for the effectiveness of improving the quality of the diagnostic parameter.
In the course of studies of the diagnostic parameter and the adaptive filtering algorithm, it was found that it is possible to set the function to be detected as a variable, as well as several parameters that affect the quality of the result. Based on this, a new method for extracting a useful signal was proposed. The results of the work were checked on a signal simulating a signal from a car's gearbox. The results show that the method allows you to obtain the necessary knowledge about the defect, which can be used in the diagnosis.
The developed method allows to increase the information content of the diagnostic parameter by suppressing noise components. The results of the proposed method correlate with the results of other methods for general cases, i.e. when the ratio of the useful signal to noise is such that high sensitivity of the method is not required to identify the useful signal.
Further research can be aimed at building a diagnostic model of a specific element or an algorithm for automatic identification of the defect.
Keywords: gearbox, technical diagnosis, test parameter, informative value, vehicle, noise.
Cite as: Penkov, E.A., Kalimullin, R.F., Sologub, V.A. (2020) [Improving the information content of the diagnostic parameter of a car gearbox]. Intellekt. Innovatsii. Investitsii [Intellect. Innovations. Investments]. Vol.1, pp. 106–114. DOI: 10.25198/2077-7175-2020-1-106.
