최소분산 캡스트럼을 이용한 차량 장착 상태에서 허브 베어링 미세결함 검출

Abstract

Angular contact ball bearing is used for a wheel bearing of an automobile. Many reasons can cause faults to be created and grown at each component of the bearing. Noise and vibration from the faults can diminish the trust of the vehicle and also reduce comfort and delightfulness. Therefore, it is critical to find the faults in the hub bearing as early as possible for preventing from noise and vibration. Moreover, it is useful to detect the faults of the bearing in the state of being equipped with the automobile. In this paper, we introduce minimum variance cepstrum(MVC) as a detection method of a small faults in a hub bearing and compare the results with envelope detection method for inspecting how effective the method is. Furthermore, we show the detailed experimental set-up for gaining faults signal of the bearing being equipped with an automobile.