Aeroelastic Flutter and Sliding Mode Control of Wind Turbine Blade

Figure 5

The results of sliding mode control based on LMI. (a) Compared results before and after control of flap vibration; (b) compared results before and after control of leg vibration; (c) limit cycle of flap direction after sliding mode control; (d) limit cycle of leg direction after sliding mode control.

(a)

(b)

(c)

(d)