Leakage diagnostics in pneumatic systems using transient patterns

Abstract

Pneumatic cylinder leakage on-line diagnostics is considered in the paper. Flow and pressure transient patterns were recorded given various combinations of simulated leakage, working pressure and actuator load mass in the assembled testing bench. Search of diagnostic features applicable for leakage detection and estimation was performed among parameters of acquired data. Data-driven models were proposed for leakage detection and estimation irrespective of varying working conditions.