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Correlation-Based Transfer Path Analysis for Brake System-Induced Interfering Noise in the Vehicle Interior RWTH Aachen University
- Format:
- Book
- Conference/Event
- Author/Creator:
- Drichel, Pascal, author.
- Conference Name:
- Automotive Technical Papers (2021-01-01 : Warrendale, Pennsylvania, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- 1.The present work introduces an approach for the analysis of the noise propagation behavior of mechatronic brake systems in modern passenger vehicles. While on the one hand, the number of features realized through the mechatronic brake system is strongly increasing; on the other hand, a continuous reduction of the overall vehicle interior noise level can be observed. This leads to an increase of interfering noise phenomena in the vehicle interior that customers might perceive as insufficient product quality. Therefore, noise elimination always plays an important role in vehicle development. The mechatronic brake system induces interfering noise that is transferred into the vehicle interior, differing from vehicle to vehicle and maneuver to maneuver. Supposedly, a wide frequency range, numerous components, and various branched transfer paths in the physical domains of airborne, structure-borne, and fluid-borne sound are involved in the noise propagation. The description of observed cause variables is vague. In this context, the understanding of the vibroacoustic system behaviorunder the limitations on relevant frequency ranges and parameterscan be achieved with the approach presented.In the first part of the paper, the system under test, the maneuvers, and the measured quantities in air-, fluid-, and structure-borne sound, as well as quantities that characterize the vehicle and the brake control system state, and the analysis procedure are introduced. In the second part, the application of the method is presented, as well as an overview of selected signals in the time and frequency domain to describe the broadband "click-clack" noise. It is shown that it is possible to reveal the underlying excitation mechanisms, to identify relevant frequency ranges, and to derive a theory for the vibroacoustic energy flow in the branched transfer paths in the passenger vehicle
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-01-5044
- Access Restriction:
- Restricted for use by site license
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