Patent ID: 11893472
Assignee: NORTHWESTERN UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G  C | IPC G

Claim 3:
4. The compensation method according to claim 1, wherein the normalization in step 2 normalizes states of input and output variables used in the accuracy compensation model of the caustic alkali concentration measuring device according to:, x
       ^
      
      n
     
     =
     
      
       
        x
        n
       
       -
       
        x
        min
       
      
      
       
        x
        max
       
       -
       
        x
        min
       
      
     
    
   
   
    
     (
     3
     )
    
   
  
 

wherein, for a historical data X=[x1, . . . , xn] of a certain variable data, xn represents a state of the variable at the nth point; xmax represents the maximum value of the variable in all the historical data; and xmin represents the minimum value of the variable in all the historical data, and
wherein the input variables are preprocessed process data and the output variables are the compensation values.