A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment

Abstract Traditional constant admittance controller (CAC) in uncertain contact environment is highly dependent on environmental location and stiffness, which are always difficult to obtain in most applications. To address this problem, a fuzzy adaptive admittance controller (FAAC) based on fuzzy inf...

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Main Authors: Zhisen Li, Hailin Huang, Xiaogang Song, Wenfu Xu, Bing Li
Format: Article
Language:English
Published: Wiley 2021-11-01
Series:IET Control Theory & Applications
Subjects:
Online Access:https://doi.org/10.1049/cth2.12175
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author Zhisen Li
Hailin Huang
Xiaogang Song
Wenfu Xu
Bing Li
author_facet Zhisen Li
Hailin Huang
Xiaogang Song
Wenfu Xu
Bing Li
author_sort Zhisen Li
collection DOAJ
description Abstract Traditional constant admittance controller (CAC) in uncertain contact environment is highly dependent on environmental location and stiffness, which are always difficult to obtain in most applications. To address this problem, a fuzzy adaptive admittance controller (FAAC) based on fuzzy inference rules is proposed in this paper. Firstly, an adaptive admittance controller (AAC) that can compensate for the admittance parameters in real time based on force error information is proposed. Secondly, a fuzzy logic loop is introduced into the adaptive term of the AAC system to reduce the overshoot when force tracking, thus creating the FAAC. The detailed design method of FAAC is presented, and the stability conditions are analysed. Finally, simulations and experiments are conducted in several dynamic environments to demonstrate the force tracking performance of the proposed controller.
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spelling doaj.art-3af7fa92bc3d4ccbae970e8e7582fa552022-12-22T04:30:51ZengWileyIET Control Theory & Applications1751-86441751-86522021-11-0115172158217010.1049/cth2.12175A fuzzy adaptive admittance controller for force tracking in an uncertain contact environmentZhisen Li0Hailin Huang1Xiaogang Song2Wenfu Xu3Bing Li4School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen 518055 People's Republic of ChinaSchool of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen 518055 People's Republic of ChinaSchool of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen 518055 People's Republic of ChinaSchool of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen 518055 People's Republic of ChinaSchool of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen 518055 People's Republic of ChinaAbstract Traditional constant admittance controller (CAC) in uncertain contact environment is highly dependent on environmental location and stiffness, which are always difficult to obtain in most applications. To address this problem, a fuzzy adaptive admittance controller (FAAC) based on fuzzy inference rules is proposed in this paper. Firstly, an adaptive admittance controller (AAC) that can compensate for the admittance parameters in real time based on force error information is proposed. Secondly, a fuzzy logic loop is introduced into the adaptive term of the AAC system to reduce the overshoot when force tracking, thus creating the FAAC. The detailed design method of FAAC is presented, and the stability conditions are analysed. Finally, simulations and experiments are conducted in several dynamic environments to demonstrate the force tracking performance of the proposed controller.https://doi.org/10.1049/cth2.12175Control system analysis and synthesis methodsStability in control theorySelf‐adjusting control systemsFuzzy controlMechanical variables controlManipulators
spellingShingle Zhisen Li
Hailin Huang
Xiaogang Song
Wenfu Xu
Bing Li
A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
IET Control Theory & Applications
Control system analysis and synthesis methods
Stability in control theory
Self‐adjusting control systems
Fuzzy control
Mechanical variables control
Manipulators
title A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
title_full A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
title_fullStr A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
title_full_unstemmed A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
title_short A fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
title_sort fuzzy adaptive admittance controller for force tracking in an uncertain contact environment
topic Control system analysis and synthesis methods
Stability in control theory
Self‐adjusting control systems
Fuzzy control
Mechanical variables control
Manipulators
url https://doi.org/10.1049/cth2.12175
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