Abstract
A new method to determine the dynamic model of a practical gear system is proposed by the identification of the relation between the rotational movement of gears and the acoustical noise signal measured on the gear tester. The rotational movement alone the line of action of gears is treated as the input of the dynamic gear system and the acoustical noise signal as the output. The parameters of the model are estimated by the LSM (least square method). By an example that the gear pair works under a certain design load and rotational speed, the identified model is verified and the optimized gear tooth profile modification is derived based on the identified model. The tested results show that the profile modification can greatly reduce gear noise.
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