Fig. 9

Altitude (z) tracking performance under a 75% efficiency loss fault (\(\rho _1=0.25\)) introduced at \(t = 20\) s, comparing MPSO-RBF FTC with Traditional SMC and Adaptive SMC.
Altitude (z) tracking performance under a 75% efficiency loss fault (\(\rho _1=0.25\)) introduced at \(t = 20\) s, comparing MPSO-RBF FTC with Traditional SMC and Adaptive SMC.