I linearized the model with options you said for wind speed of 18, and found the linear file as below:
This linearized model file was generated by FAST (v7.00.01a-bjj, 5-Nov-2010) on 17-Aug-2015 at 14:21:01.
The aerodynamic calculations were made by AeroDyn (v13.00.00a-bjj, 31-Mar-2010).
NREL 5.0 MW Baseline Wind Turbine for Use in Offshore Analysis.
Some Useful Information:
Type of steady state solution found Trimmed collective blade pitch (TrimCase = 3)
Azimuth-average rotor speed, RotSpeed (rad/s) 1.26711E+00
Period of steady state solution (sec) 4.95868E+00
Iterations needed to find steady state solution 26
Displacement 2-norm of steady state solution (rad) 1.71670E-05
Velocity 2-norm of steady state solution (rad/s) 3.70742E-05
Number of equally-speced azimuth steps, NAzimStep 36
Order of linearized model, MdlOrder 1
Number of active (enabled) DOFs 2 ( 4 states)
Number of control inputs, NInputs 2
Number of input wind disturbances, NDisturbs 0
Number of output measurements 2
Order of States in Linearized State Matrices:
Row/column 1 = 1st tower fore-aft bending mode DOF (internal DOF index = DOF_TFA1)
Row/column 2 = Variable speed generator DOF (internal DOF index = DOF_GeAz)
Row/column 3 to 4 = First derivatives of row/column 1 to 2.
Order of Control Inputs in Linearized State Matrices:
Column 1 = electrical generator torque (N·m) 4.30936E+04 op
Column 2 = rotor collective blade pitch (rad) 2.59779E-01 op
Order of Input Wind Disturbances in Linearized State Matrices:
Order of Output Measurements in Linearized State Matrices:
Row 1 = RotSpeed (rpm)
Row 2 = NcIMUTVxs (m/sec)
Linearized Average State Matrices(after using MBC):
0 0 1.0000 0
0 0 0 1.0000
-3.1337 -0.0000 -0.2562 -1.2992
-0.0010 -0.0000 -0.0271 -0.2419
0 0 0 9.5490
0.0000 0 1.0360 0
The bode diagrams
Is my achieved linearized model correct? If no where are my mistakes?