| Summary: | 碩士 === 國立中央大學 === 機械工程研究所 === 96 === This thesis comprises the theoretical derivation, numerical implementation, and experimental justification. To overcome the deficiencies of two original VKF_OT schemes for condition monitoring and diagnosis of rotary machinery, the study shows two advanced VKF_OT approaches, i.e. the extended angular-velocity and adaptive angular-displacement VKF_OT techniques and implement the latter technique in this thesis. These two proposed schemes can simultaneously extract multiple order/spectral components, and effectively decouple close or crossing orders associated with multi-axial reference rotating speeds. The adaptive angular- displacement VKF_OT scheme based on the Kalman filter can be calculated on-line and implemented as a real-time processing application through using a digital signal processor (DSP). Hence, three synthetic signals composed of different order/spectral components and two experimentations are designed to justify the effectiveness of applying the adaptive VKF_OT technique in practical works.
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