DIGITAL ORDER TRACKING ANALYSIS FOR ROTATING MACHINERY MONITORING. THEORY AND IMPLEMENTATION

Summary This paper presents a brief of properties and rules of digital order tracking analysis in diagnosis of rotary machines. The classical methods of order spectrum analysis are also provided. The main part of given paper is description of new approach of method for digital tracking analysis. The most important thing is a way of choosing samples for logical change of regular sampling in time domain by regular sampling in angle domain. The low-order filter based method is used. Presented paper shows design of such filter and the results of simulations and experiments. At the end short brief of expert systems idea for diagnosis of rotary machines was shown.