Patent ID: 11928613
Assignee: EAST CHINA JIAOTONG UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. The bearing fault diagnosis method based on the fuzzy broad learning model according to claim 1, wherein calculation formulas of the classification matrix are as follow:

U=[Uij]cxn;

v=[v1,v2,v3 . . . vc]T;

d=∥xj−vj∥=(xj−vi)T;, J
    ⁡
    (
    
     U
     ,
     V
    
    )
   
   =
   
    
     
      ∑
       
     
     
      j
      =
      1
     
     n
    
    ⁢
    
     
      ∑
       
     
     
      i
      =
      1
     
     c
    
    ⁢
    
     u
     ij
     m
    
    ⁢
    
     d
     ij
    
   
  
  ;
 

wherein J is a target function; uij is a membership value of a jth data point xj relative to an ith clustering center vi; dij is a Euclidean distance of the jth data point xj relative to the ith clustering center vi; U is the classification matrix; V is a clustering center vector; xj is a jth input sample; vi is a ith clustering center vector; c is the number of clustering center vectors; n is the number of input samples; m is a fuzzy weighting index; T is a transposed symbol.