Using Tracking Differentiators in Designing Nonlinear Disturbance Observers for Uncertain Systems
الموضوعات : journal of Artificial Intelligence in Electrical Engineering
Nasser Kazemzadeh
1
(Department of Electrical Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran)
Saeed Barghandan
2
(Department of Electrical Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran)
الکلمات المفتاحية: non-linear systems, uncertain disturbances, non-linear disturbance observer (NDO), tracking differentiator,
ملخص المقالة :
Using Tracking Differentiators in Designing Nonlinear Disturbance Observers for Uncertain SystemsNaser Kazemzadeh, Saeed BarghandanAbstractIn the present paper, a practical designing method has been proposed for a novel class of NDOs based on TD. Such NDOs can nearly estimate all uncertain disturbances (specifically disturbances without prediction information). Regarding the outstanding performance of TD filter not requiring a precise dynamic model, the proposed NDO can estimate external disturbance and not modeled dynamics. The results showed the superiority of the proposed method in estimating disturbance and improvement of control quality.Keywords: non-linear systems, uncertain disturbances, non-linear disturbance observer (NDO), tracking differentiator
