Diagnosis of Pneumatic Systems on Basis of Time Series and Generalized Feature for Comparison with Standards for Normal Working Condition

• Main Authors: Rosen Kosturkov, Veselin Nachev, Tanya Titova
• Format: Article
• Language: English
• Published: UIKTEN 2021-02-01
• Series: TEM Journal
• Subjects: diagnosis; pneumatic systems; leakages detection; time series; feature; metric space; correlations
• Online Access: http://www.temjournal.com/content/101/TEMJournalFebruary2021_183_191.pdf

Faults are unwanted events in any industrial production system. Early detection and diagnosis of faults in automated systems is important in order to prevent equipment damage, loss of performance and profits. For this purpose, more and more sophisticated and complex systems for observation and monitoring of basic characteristics in automated processes are being built. Preconditions for increasing their efficiency are processing and analysis of process information is obtained through a significant number of sensors. For pneumatic systems in addition to the identification of certain faults that may affect the normal production process, it is important to consider the possibilities to improve their energy efficiency. In this regards, the work focuses on the detection of leaks. The fault detection is based on the measurement of the compressed air consumption at the inlet of the pneumatic module and synchronization with signal from the PLC to the valve, and controlled the pneumatic cylinder. The experimental study aims to develop methods for automatic detection and classification of leaks that may be used in machine learning algorithms.