Wheel motor units are subjected to significant axial and radial load, alternate dynamic and shock actions, vibration loads, electromagnetic and electrostatic fields. Other negative factors include wide range of speeds of rotation (up to 700 rpm) and permanently changing environment.
In such operating conditions wheel motor units must retain their operating parameters and behavior in accordance with the Instruction №CT/330 for maintenance and repair.
As a result, the need for systematic condition monitoring of wheel motor units of electric multiple units emerged. However, occasional openings of the assemblies, rolling-out of units and machines for inspection call forth growth of complexity and cost of repair, thus increasing the downtime of electric multiple unit. Thus, it is expediently to control technical condition of wheel motor units without dismantling (by non-destructive diagnostics).
The report presents a number of requirements that are necessary and sufficient to create a diagnostic system matching modern criteria and needs of the consumer.
Kostyukov V.N., Lagaev A.A. Technical diagnostics of wheel motor units of electric multiple units // Nauka, obrazovanie, biznes (Science, education, business). - 2007. - pp. 73-76
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