Psychoacoustic Optimization of Gear Noise - Chaotic Scattering of Micro Geometry and Pitch on Cylindrical Gears

摘要

Introduction and Motivation: Increasing sensitization for the topic noise, reduced masking noises and increased customer demands lead to an increasing importance of transmission noise. Especially due to the tonal characteristic of gear whining, gear noises move quickly and negatively into the customer's focus (Ref. 1). One of the most important criteria in the qualitative evaluation of gear transmissions in automotive engineering is the noise behavior (Ref. 2). The control of vibrations and the optimization of noise behavior inside of the vehicle is therefore an important development aim of automobile and transmission manufacturers (Ref. 3). A large part of the vibrations and noises inside of a vehicle are generated in the drive train. Especially in motor vehicles, the reduction of masking noise sources through downsizing as well as electrification and hybridization of the drive train increases the importance of a low-noise transmission (Ref. 4).