Research Article

Switched Two-Level and Robust Fuzzy Learning Control of an Overhead Crane

Figure 9

The learning history of gains guided by the simplex method showing convergence of the gain parameters. In each of the 3 dimensional cases, the method starts with 4 simplexes and a new simplex, is formed for the following steps by collecting the 4 best solutions so far at the 30th step.
712615.fig.009a
(a)
712615.fig.009b
(b)
712615.fig.009c
(c)
712615.fig.009d
(d)