Model Reference DSMC With a Relative Degree Two Switching Variable

Reaching-law-based discrete sliding mode controllers are well known to be easy tune and robust with respect disturbance. In recent years, it has been demonstrated that their robustness can further enhanced the use of arbitrary relative degree variables. However, reaching laws using such variables only ensure a good performance system when perturbations affecting plant matched, which is very restrictive assumption. To address this issue improve plant, in article, we propose new model reference approach for strategies two proposed approach, law first used control evolution disturbance-free then, original state driven toward secondary controller. It will shown ensures better compared conventional does not require assumption about matched uncertainties.