Hello,

Currently, I am working on the pitch control, so I use this file : https://github.com/OpenFAST/r-test/blob/main/glue-codes/openfast/WP_VSP_ECD/pitch.ipt

And this option in NRELOffshrBsline5MW_Onshore_ServoDyn.dat : 3 PCMode - Pitch control mode

With this configuration I can control the coefficients of Tf :

1 Order of tf #1 (highest power of s), input=Rotor speed (RPM), output=Integral Pitch demand (deg)

2.22 0.0 Numerator coefficients (Order+1 values, ascending powers of s)

0.0 1.0 Denominator coefficients (Order+1 values, ascending powers of s)

0 Order of tf #2 (highest power of s), input=Rotor speed (RPM), output=PD Pitch demand (deg)

5.14 0.08 Numerator coefficients (Order+1 values, ascending powers of s)

1.0 0.02 Denominator coefficients (Order+1 values, ascending powers of s)

0 Order of tf #3, input=Tower accel, output=pitch (deg) (Use 0 to not include tower feedback cntrl)

9.64 1.4 Numerator coefficients (Order+1 values, ascending powers of s)

0.358 1.0 Denominator coefficients (Order+1 values, ascending powers of s)

2 Order of tf #4, input=Pitch demand(deg), output=pitch (deg)

85 0.0 0.0 Numerator coefficients (Order+1 values, ascending powers of s)

85 3.703 1.0 Denominator coefficients (Order+1 values, ascending powers of s)

So my first question is about the PCMode 5 : user-defined from Bladed-style DLL. Where can I find the coefficients for this mode ?

My second one is about the pitch.ipt, Where can I find the PID diagram ?

Best Regards

Hugo BONTEMPS