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There are many practical situations in which the chaotic signal appears in the observation in a random manner so that there are intermittent failures in the observation mechanism at certain times. Using weights and network output of neural network as state equation and observation equation to obtain the linear state transition equation, and the chaotic time-series prediction results represented by...
Derivative-free extended Kalman filter (DEKF) represented uncertainty by an ensemble set of state vectors rather than by the traditional mean and covariance measures, avoiding the need for the calculation of Jacobian matrices. This paper used weights and network output of multilayer perceptron as state equation and measurement equation to obtain the linear state transition equation, and the prediction...
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...
The researches on vibration behavior of axial flux permanent magnet synchronous motor (AFPMSM) are presented in the paper. The main work includes calculation of axial fluctuating electromagnetic forces caused by various harmonics in air gap with Maxwell stress tensor method in 3-D magnetic field. The principle resulting in axial electromagnetic force is deduced by numerical algorithm. The axial electromagnetic...
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...
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