“Análise cepstral aplicada a medições de vibração em manutenção preditiva”
Abstract This paper presents the analysis in predictive maintenance of vibrations, as an important tool to address the anomalies so that when they are detected at the beginning, they can be controlled in order to increase the lifetime of the equipment and reduce the cost of repair. Initially it is made a summary of the main topics related to predictive maintenance, among them the best-known types of failures. Cepstral analysis is introduced as the adjacent spectral technique in the diagnosis of failures of major components of equipment; some practical aspects of signal processing are also presented in this work in order to overcome limitations in existing tools of analysis used. Finally is shown the result of applying the technique in a prototype cepstral where some defects are simulated to prove the efficiency of cepstral analysis as a tool for diagnosis of faults in equipment.
1. Introdução O estudo das vibrações é de fundamental importância