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Actuators 2018, 7(3), 52; https://doi.org/10.3390/act7030052

Development and Implementation of a Multi-Channel Active Control System for the Reduction of Road Induced Vehicle Interior Noise

1
Department of Automotive & Aeronautical Engineering, Hamburg University of Applied Sciences, 20099 Hamburg, Germany
2
Fraunhofer Institute for Structural Durability and System Reliability LBF, 64289 Darmstadt, Germany
3
Volkswagen AG, 38436 Wolfsburg, Germany
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 8 July 2018 / Revised: 17 August 2018 / Accepted: 21 August 2018 / Published: 27 August 2018
(This article belongs to the Special Issue Piezoelectric Actuators 2018)
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Abstract

An optimized driving comfort with a low interior noise level is an important intention in the passenger car development process. The interior noise level caused by the dynamic interaction between the rolling tyre and the rough road surface and transmitted via the car-body is a significant component of the entire noise level. To reduce the road induced interior noise, in general, the chassis system has to be optimized. Passive measures often induces a trade-off between vehicle dynamics and driving comfort. To overcome this disadvantage in this paper, the development and realization of an active measure is proposed. For the purpose of active mechanical decoupling, an active control system is developed, the feasibility of the integration is investigated and its noise reduction potential is identified by vehicle tests. In a first step, a classical multi-channel and experimental-based structure-borne transfer path analysis of the full vehicle is realized to determine the dominant transfer paths. The concept for the active mount system (active mounts, multi-channel control system, sensors) is developed and parametrized by system level simulation. Mechanical components and power electronics of the active system are designed, manufactured and tested in the laboratory. Subsequently, the entire active system is integrated into the vehicle. The broadband adaptive feedforward algorithm is extended by certain measures in order to improve robustness and performance. Full vehicle tests are used to quantify the required specifications and the achieved effectiveness of the active vibration control system. View Full-Text
Keywords: rolling noise; noise transfer model; piezoelectric actuator; active mount; active vibration control; feedforward control; FxLMS; MIMO system; AVC; ASAC rolling noise; noise transfer model; piezoelectric actuator; active mount; active vibration control; feedforward control; FxLMS; MIMO system; AVC; ASAC
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Gäbel, G.; Millitzer, J.; Atzrodt, H.; Herold, S.; Mohr, A. Development and Implementation of a Multi-Channel Active Control System for the Reduction of Road Induced Vehicle Interior Noise. Actuators 2018, 7, 52.

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