# Wind turbine pitch control — reproduction guide

Team: Alazar Wake, Mahteb Negussie, Nahom Megerssa, Yetemegeta Sebisbe.
Course: ELE 4623 Control Systems, Higher Colleges of Technology.
Supervisor: Dr. Kamal Abuqaaud. Report submission: 10 May 2026.

Files
- wind-control.mlx: MATLAB Live Script.
- wind-control.m: code cells exported in document order from that Live Script.
- wind-control-report.pdf: 30-page submitted report, student IDs removed.
- wind-control-slides.pdf: 13-slide presentation, student IDs removed.

Requirements and execution
Use MATLAB with Control System Toolbox and Symbolic Math Toolbox.
Open wind-control.mlx in the Live Editor and select Run All, or place
wind-control.m in MATLAB's working directory and run: run('wind-control.m').
The program clears the current workspace and closes existing figures.
It uses the parameters defined in the script; no external dataset is required.

Model
J = 1, B = 1.5, Tp = 0.2, A = 10.
The model closes an inner drivetrain loop, then the outer pitch-control loop.
The reported overall transfer function is 50/(s^3 + 7.5*s^2 + 12.5*s + 50).

Reported results (Table 7, report PDF page 26)
Design                Settling(s)   Overshoot(%)  Phase margin(deg)
Original              9.757         59.428        18.078
Gain compensation     7.234         45.087        28.1
Phase lead            1.4587        20.252        44.331
Phase lag             60.843        6.8876        75.253
PID (ZN)              5.142         59.547        24.8

Verification and interpretation
The package contains the original MATLAB simulation calculations and reported results.

Scope
Linear simulation only. No physical wind turbine tests, actuator saturation,
nonlinear aerodynamic model or varying-wind disturbance validation is claimed.
The report lists all four authors but does not assign sections to individuals.

Attribution
Original report figures and calculations belong to the named project team.
No additional software license is inferred by packaging these files.