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Structure-borne Road Noise Target Allocation to Tire-Wheel Subsystem in Autonomous Vehicles
Zoox Inc.
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0002-3852-8818
Zoox Inc.
2023 (English)In: Aachen Acoustics Colloquium: November 27th - 29th, 2023 / [ed] Gottfried Behler, 2023Conference paper, Published paper (Refereed)
Abstract [en]

Personal transportation as we know it is being reimagined thanks to the introduction of autonomous electric vehicles. With autonomous vehicles (AV) on the rise, especially for Transportation Network Companies (TNC), it is expected that the experience inside of the vehicle cabin will be tailored engineered for riders, not drivers. As a result, customer-facing attributes such as noise, vibration, and harshness (NVH) will need to be considered with a new perspective. Of the many challenges in developing NVH performance of an AV, road noise and component noise have, and continue, to require the most amount of development and refinement effort. It is well known that a critical component in the chain from the tire-road interface to the occupant’s ears is the tire-wheel assembly and, therefore, allocating targets for this subsystem is essential. When in motion, the tire-wheel system possesses complex structural-acoustic properties like centrifugal, gyroscopic, fluid-structure coupling, pre-load effects, and excitation that may be described by random enforced motion at the tire contact patch and road interface. Component targets are derived by experimental and virtual methods, enabling simulation-driven product development. For tire testing and development, experimental methods are often limited by the availability of complex and expensive test infrastructure. An alternative approach is explored in order to develop tire-wheel subsystem targets using experimental tests and virtual methods applying transmissibility theory with multiple degrees of freedom based on frequency response functions derived at free-free boundary conditions.

Place, publisher, year, edition, pages
2023.
Keywords [en]
Noise & Vibration, Road Noise, Structure borne Noise, Transmissibility, Tyre
National Category
Vehicle and Aerospace Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
URN: urn:nbn:se:kth:diva-342670OAI: oai:DiVA.org:kth-342670DiVA, id: diva2:1831323
Conference
Aachen Acoustics Colloquium 2023, November 27th - 29th, 2023
Funder
Vinnova
Note

QC 20240125

Available from: 2024-01-25 Created: 2024-01-25 Last updated: 2025-02-14Bibliographically approved

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Sturesson, Per-Olof

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