Method for direction diagnosis of multiple fluctuation sources on the flow standard facility

Abstract

Identifying sources of fluctuations is important for the location and elimination of the fluctuation sources in the flow standard facility, however it is difficult to diagnose the direction of fluctuation source when multiple sources exist. A correlation analysis method based on Empirical Mode Decomposition (EMD) utilizing the signals of pressure sensor and flowmeter is proposed to diagnose the directions of different fluctuation sources. The proposed method could separate the superposition signal of multiple fluctuation sources and effectively diagnose the directions of multiple fluctuation sources at one time and provide accurate information for the location and elimination of the fluctuation sources. Experiment platform was built based on a water flow standard facility and the direction diagnosis experiment of double fluctuation sources was conducted to verify the effectiveness of the proposed method. The experiment results shows that the directions of multiple fluctuation sources could be accurately diagnosed by the proposed method.