ENGINEERING ANALYSIS OF OPERATIONAL RELIABILITY OF TROLLEY'S ELECTRICAL EQUIPMENT
Relevance of the work due to the need to improve the practical methods of increasing the level of reliability to ensure the durability of electrical equipment trolley and security. Reliability analysis allows you to develop a set of measures to improve the reliability and durability as separate elements and trolley as a whole, justify a system of maintenance and repair, to evaluate the real level of reliability, form the reliability requirements with respect to the given operating conditions. Objective: To develop a methodology for engineering analysis of the operational reliability of electrical equipment trolley. Methods: statistical methods for determining the quantitative assessment of operational reliability, the laws of distribution functions. The quantitative indicators to assess the sensitivity of changes in mean time to failure. Results: The quantitative assessments of the relationship drives electrical equipment trolley. The quantitative indicators to assess the sensitivity of changes mean time between failures. Tabular data obtained in this work are used as reference materials in improving the system of maintenance and repair. Conclusions: The method of determining the mean time between failures when the parameters of the normal distribution. Analysis assessing the impact of changes in the mean operating time between failures, increasing the mean time between failures of the traction electric motor, electric power steering and the compressor 5%, 10%... 30%, showed the strategy to increase the reliability of electrical equipment trolley. According to the developed mathematical model for assessing the reliability of drives to analyze the relationship of electrical equipment trolley. There was a significant change to influence the reliability of the stator winding on the reliability of the driven equipment. The estimation of the sensitivity variation of the mean time between failures of the rolling stock.