Quality Evaluation of Transmission Devices Using the GA

In this paper, we propose a new method of evaluating the quality of a transmission device according to the acoustic data by using the genetic algorithm (GA). We consider that the “spectrum average” and the “frequency variation” reflect the characteristic of acoustic data. In this paper, we first extract the “spectrum average” and the “frequency variation” from the acoustic data of operating transmission device. Then we use the GA to select the “significant frequencies” and determine the boundary between good and no good products. The experimental results show that the proposed method can perform the quality evaluation of transmission devices successfully.