Trajectory tracking of a quadrotor using a robust adaptive type-2 fuzzy neural controller optimized by cuckoo algorithm

A framework for designing cognitive trajectory controllers using genetically evolved interval type‐2 fuzzy cognitive maps

“…The generic rule structure of the IT2-FLS that is composed of N r rules is as follows [50][51][52][53] :…”

“…where Y i are crisp consequent MFs and A j Q ~, = 1, …, . 52 The output of IT2-FLS is computed as follows 54…”

“…The IT2-FCMs, which include a large number of T1-FCMs, in addition to having all the properties of the T1-FCM, can significantly reduce the adverse effects of the uncertainties related to the environment and system parameters. 52 The footprint of uncertainty in the IT2-FSs of the IT2-FCM systems is defined as a limited region between the upper and the lower bounds of these functions. In fact, these IT2 MFs represent the union of the T1 MFs (Figure 5).…”

Interval type-2 fuzzy computational model for real time Kalman filtering and forecasting of the dynamic spreading behavior of novel Coronavirus 2019

“…Recently, the combination of different intelligent systems with traditional computational approaches has been proposed in different fields of research in order to develop more efficient tools [10] , [11] , [12] , [13] . In the context of computational modeling of experimental data, type-2 fuzzy systems have attracted considerable attention by researches due to its interpretable rule-based structure with capability to treat nonlinearity and uncertainty [14] , [15] , [16] .…”

Fractional-order nonsingular terminal sliding mode controller for a quadrotor with disturbances

“…In this paper, a disturbance estimator-based attitude control law has been presented. A robust adaptive type-2 fuzzy neural controller optimized for quadrotor systems has been presented in [15].…”