Patent ID: 11926376
Assignee: THYSSENKRUPP AG
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. The method of claim 1 wherein upon a missing sensor calibration of the second and third gear wheels, the method comprises:
in a first step of the self-calibration the stability margin t is calculated based on first sensor readings after system startup; and
calibrating gear angle sensors of the second and third gear wheels to have a common zero output, wherein angle offsets of the second and third gear wheels are calculated by, Δ
    ⁢
    θ
  
  =
  
    
      
        -
        
          
            t
            ⁢
            Ω
          
          
            2
            ⁢
            
              (
              
                m
                +
                1
              
              )
            
          
        
      
      ⁢
      
        
      
      ⁢
      and
      ⁢
      
        
      
      ⁢
      Δψ
    
    =
    
      
        t
        ⁢
        Ω
      
      
        2
        ⁢
        m, and applied as constants in the calculation of the angle ϕ of the steering shaft.