A Chattering-Free Sliding Mode Filter Enhanced by First Order Derivative Feedforward

A Chattering-Free Sliding Mode Filter Enhanced by First Order Derivative Feedforward

Noise reduction is one of the important issues for feedback control systems. Toward this problem, this paper proposes a new sliding mode filter, which is an improvement of Lv et al. 's parabolic sliding mode filter. The proposed filter employs a first-order derivative feed-forward term for incr...

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Bibliographic Details
Main Authors: Shanhai Jin, Zhengxiang Lv, Xiaogang Xiong, Jingdong Yu
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Sliding mode filter
implicit Euler discretization
chattering avoidance
noise reduction
PD control
feedback control
Online Access:https://ieeexplore.ieee.org/document/9016173/
Description
Summary:Noise reduction is one of the important issues for feedback control systems. Toward this problem, this paper proposes a new sliding mode filter, which is an improvement of Lv et al. 's parabolic sliding mode filter. The proposed filter employs a first-order derivative feed-forward term for increasing both tracking and noise attenuating performances. Its discrete-time algorithm is derived by applying the implicit-Euler discretization, and it realizes exact convergence without producing chattering in discrete-time implementation. The effectiveness of the proposed filter is evaluated through an open-loop and a closed-loop numerical examples.
ISSN:2169-3536

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