Research Article

Sliding Mode-Based Control of a UAV Quadrotor for Suppressing the Cable-Suspended Payload Vibration

Figure 10

Quadrotor positions along the X- and Z-axis, and pendulum swing angle–responses for l = 0.5 m and m = 0.5 kg, and for parameter perturbation with the range of 20% and 40%.
(a)
(b)
(c)