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Fiber Optical Gyroscope (FOG) is becoming affordable for many applications such as vehicle navigation and stabilization. Operating under the circumstance of which, vibration canpsilat be ignored. This paper researched into the characteristic of vibration of structure of FOG. Base on the model analysis using ANSYS (finite element analysis software), we did dynamic analysis for bracket of FOG. On the...
A new analytical technique for axial flux PM machines is introduced in this paper. The basic principles of the new technique are explored, and the differences between radial and axial flux PM machines is discussed. Then calculation program based on MATLAB language is finished. The acoustic noise for 5 kW, 22-poles axial flux surface magnet disc type machine with single-rotor-double-stator is calculated...
Calculation of electromagnetic vibration and noise for disk permanent magnet synchronous machines (DPMSM) by using the finite element method (FEM) is presented in this paper. The pulse measuring system produced by the Danish B&K company for noise and vibration is used to measure a DPMSM in a anechoic chamber. Finally, both calculating and measuring results are analyzed, and the acoustic source...
The vibration of stator core in large-scale hydro-generator is a critical problem that should be considered in motorpsilas design procedure and operation. Electromagnetic vibration of stator core can be classified into two categories: one is low-frequency vibration at rotor frequency and multiples of rotor frequency, which results from that the rotor is slightly out of round, the other is electromagnetic...
Presents the concept of a parametrically phase-coupled random harmonic process. It is argued that such processes will be present in the vibration signature of a simple mechanical system, and as such would be of interest in the analysis of vibrations for condition-based maintenance. It is shown that conventional higher-order spectral (HOS) techniques reveal only limited features of parametrically phase-coupled...
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