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Proceedings Paper

Design of second-order sliding mode tracking differentiator to reduce noise perturbation
Author(s): Baoshan Zhao; Naiming Qi
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Paper Abstract

The perturbation induced by signal frequency is one of the main problems for tracking differentiator design, and classical linear differentiators are usually sensitive to signal frequency. An improved second-order sliding mode nonlinear tracking differentiator is proposed in this paper using Lyapunov stability theory, considering the robustness of sliding mode control theory. This tracking differentiator can track and differentiate any signal. At the same time it has a simple form and is easy to be applied. A numerical simulation is presented for the linear tracking differentiator and the nonlinear tracking differentiator with different input signals, and results verified the effectiveness of the second order sliding mode tracking differentiator. A method to eliminate perturbation caused by noise is presented at the end of this paper.

Paper Details

Date Published: 28 December 2010
PDF: 7 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 754473 (28 December 2010);
Show Author Affiliations
Baoshan Zhao, Harbin Institute of Technology (China)
Naiming Qi, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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