Psychoacoustic Evaluation of Hydraulic Pumps

Tobias Pietrzyk, Markus Georgi, Sabine Schlittmeier and Katharina Schmitz
Additional contact information
Tobias Pietrzyk: Institute for Fluid Power Drives and Systems (ifas), RWTH Aachen University, 52074 Aachen, Germany
Markus Georgi: Teaching and Research Area of Work and Engineering Psychology, Institute of Psychology (IfP), RWTH Aachen University, 52056 Aachen, Germany
Sabine Schlittmeier: Teaching and Research Area of Work and Engineering Psychology, Institute of Psychology (IfP), RWTH Aachen University, 52056 Aachen, Germany
Katharina Schmitz: Institute for Fluid Power Drives and Systems (ifas), RWTH Aachen University, 52074 Aachen, Germany

Sustainability, 2021, vol. 13, issue 13, 1-22

Abstract: In this study, sound measurements of an axial piston pump and an internal gear pump were performed and subjective pleasantness judgements were collected in listening tests (to analyze the subjective pleasantness), which could be seen as the inverse of the subjective annoyance of hydraulic drives. Pumps are the dominant sound source in hydraulic systems. The noise generation of displacement machines is subject of current research. However, in this research only the sound pressure level (SPL) was considered. Psychoacoustic metrics give new possibilities to analyze the sound of hydraulic drive technology and to improve the sound quality. For this purpose, instrumental measurements of the acoustic and psychoacoustic parameters are evaluated for both pump types. The recorded sounds are played back to the participants in listening tests. Participants evaluate them regarding the subjective pleasantness by means of paired comparison, which is an indirect scaling method. The dependence of the subjective pleasantness on speed and pressure was analyzed for both pump types. Different regression analyses were carried out to predict the subjectively perceived pleasantness or annoyance of the pumps. Results show that a lower speed is the decisive operating parameter for reducing both the SPL and the annoyance of a hydraulic pump.

Keywords: hydraulic; pumps; acoustic; sound measurements; axial piston pump; internal gear pump; psychoacoustic; annoyance; electrification of mobile machinery (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/13/13/7320/pdf (application/pdf)
https://www.mdpi.com/2071-1050/13/13/7320/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:13:p:7320-:d:585577

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().