Errors assessment in machines assembling by a vibro-acoustic method

The article considers the method of errors standardless assessment in machines assembling, based on analysis of the vibro-acoustic signals, related to unobservable errors in machines and units, arising within production and operation, some of which do not have an adequate representation in relations and intervals scales.

There has been established a canonical equation of connection between the signal diagnostic features and the machine state structural parameters, represented as ordinal scales; where the equation constitutes the first corner bisectrix of an information plane.

Modeling and experimental research results have been presented.

There has been received an assessment of a diagnostic error, caused by a stochastic communication between diagnostic features and structural parameters, which is inversely proportional to Spearmen's rank-order correlation ratio between them.

The vibro-acoustic method allows to single out during running and acceptance tests the machines with large values of errors and send them back for finishing, preventing their operation.

The proposed approach eliminates the need for training the diagnostic systems on machines-standards with known errors and significantly reduces financial and time costs for the diagnostic systems implementation.

Kostyukov V.N., Kostyukov Al.V. Errors assessment in machines assembling by a vibro-acoustic method // Assembling in mechanical engineering, instrument making. - 2010. - №1. - pp. 22-28

Download the publication

You can order the translation by e-mail: a@dynamics.ru