Method for identification of hydraulic impedance of a positive displacement pump based on pressure transfer functions estimation

Jonas Holzbrecher, Fadi Dohnal, Benedikt Müller, Evamo Pump Technology Solutions PS GmbH, Engineering Simulation Acoustics, Schwäbisch Gmünd, Institute of Measurement and Sensor Technology, UMIT Tirol, Hall in Tirol, Research Centre for Microtechnology, Vorarlberg University of Applied Sciences, FLUIDON Gesellschaft für Fluidtechnik mbH

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy

Published online on February 09, 2026

Abstract

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, Ahead of Print.
In hydraulic systems, pressure pulsations can excite structural resonances, causing unwanted vibrations and noise. A key parameter for analyzing such effects is the hydraulic impedance, as it characterizes the reflection behavior of components such as ...