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Rotec China Office nimmt offiziell den Betrieb auf
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Rotec Munich setzt seinen internationalen Wachstumskurs konsequent fort: Das neue ROTEC China Office hat...
CASE STUDY
Torsional vibration in electric drivetrains: where does it become critical?
Noise excitation, dynamic loading and relevant measurement parameters in electric drivetrains.
What the case study covers
The switch to electromobility is gathering pace. The original introduction cites a historical figure of 10.9 million electric cars worldwide in 2020 and a then-current Ceresana forecast of 34 million by 2030. These figures are not an updated market forecast. When developing electric drivetrains, the focus is not only on the electric storage capacity, weight and size of the traction machine, but also on durable drivetrain components, driving comfort and therefore low-noise driving. Standard NVH analysis systems use airborne and structure-borne sound signals to investigate the generated noise, vibrations and their transmission paths, but usually ignore the mechanism of how these effects are generated.
How can noise excitation be better investigated, where can torsional vibrations become critical as well as dynamic loads, and which parameters should be recorded?
The following case study addresses these questions in detail and presents solutions.
Questions and answers
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