A Robust Control Strategy for Landing an Unmanned Aerial Vehicle on a Vertically Moving Platform

Figure 5

Comparison between the control strategies OCS and TBS, when the system is perturbed by a normally distributed random process with zero mean: (a) OCS error index; (b) TBS error index; (c) OCS control action; (d) TBS control action.

(a)

(b)

(c)

(d)