1. Center for Industrial Diagnostics (CDIF), Universitat Politècnica de Catalunya (UPC), Avinguda Diagonal 647, 08028 Barcelona, Spain
2. Laboratory for Hydraulic Machines (LMH-IMHEF), École Polytechnique Fédérale de Lausanne (EPFL), Avenue de Cour 33bis, CH-1007 Lausanne, Switzerland