关键词: 涡轮泵;故障诊断;球结构支持向量机+;多类算法+

Abstract: Multi-category faults were common in turbo-pump and other machines.In order to speed up the multi-category faults diagnosis,an improved sphere support vector machine was proposed in this paper.The sizes of class spheres are fully taken into account,and better classification rules outside the spheres and in the intersections of the spheres are derivated by many theoretic analyses and experiments.This new method and several other normal methods are used in the diagnosis of simulated multi-category faults in turbo-pump.Results show that the diagnosis time is much shorter and the diagnosis correct rate is high with the improved sphere support vector machines.

Key words: Turbine pump;Fault diagnosis;Sphere support vector machines~+;Multi-category~+