I. Introduction
One of the principles that determines the performance of a system is the tuning of its control parameters. In general, the performance of the laws of control depends on the values of these parameters. The design and calibration of the controllers is carried out based on existing tuning methods, however, in the case of SMC controllers, due to their use in non-linear plants, the calibration of their parameters becomes a work of test and error. On the other hand, it is important to point out that new techniques have been developed, so that the parameters of the controllers can be tuned automatically. Among these new techniques, we can highlight the GA as a tool for the tuning of controllers [1] , [2] .