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《Journal of Huazhong University of Science and Technology(Nature Science Edition)》 2006-03
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Application of a new moment invariant to identification of axis orbit in hydro-generator unit

Chen Xiyang Zhang Kewei Dr.;College of Energy & Power Eng.,Huazhong Univ.of Sci.& Tech.,Wuhan 430074,China.  
A method to automatically identify axis orbit of hydro-generator unit on the basis of moment invariant and BP neural network was proposed.The influences of scale factor on curve moment invariant features in discrete state were analyzed and an improved curve moment with scale,translation and rotating invariant was introduced.The simulation and real diagnosis examples were given to prove that the construction of the performance of the new moment invariant.Momentum item was introduced to improve BP neural network learning speed.It acquired parameters of the axis orbit shape to help operation personnel to diagnose by optimization method.
【Fund】: 国家攀登计划预选项目(PD9521907)
【CateGory Index】: TM312
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