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  4. Fuzzy sliding mode control of a wearable rehabilitation robot for wrist and finger
 
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Fuzzy sliding mode control of a wearable rehabilitation robot for wrist and finger

Publikationstyp
Journal Article
Date Issued
2019-10-21
Sprache
English
Author(s)
Abbasi Moshaii, Alireza  orcid-logo
Mohammadi Moghaddam, Majid  
Dehghan Niestanak, Vahid  
TORE-URI
http://hdl.handle.net/11420/7020
Journal
Industrial robot  
Volume
46
Issue
6
Start Page
839
End Page
850
Citation
Industrial Robot 6 (46): 839-850 (2019-10-21)
Publisher DOI
10.1108/IR-05-2019-0110
Scopus ID
2-s2.0-85071681656
Purpose: The purpose of this paper is to introduce a new design for a finger and wrist rehabilitation robot. Furthermore, a fuzzy sliding mode controller has been designed to control the system.

Design/methodology/approach: Following an introduction regarding the hand rehabilitation, this paper discusses the conceptual and detailed design of a novel wrist and finger rehabilitation robot. The robot provides the possibility of rehabilitating each phalanx individually which is very important in the finger rehabilitation process. Moreover, due to the model uncertainties, disturbances and chattering in the system, a fuzzy sliding mode controller design method is proposed for the robot.

Findings: With the novel design for moving the DOFs of the system, the rehabilitation for the wrist and all phalanges of fingers is done with only two actuators which are combined in one device. These features make the system a good choice for home rehabilitation. To control the robot, a fuzzy sliding mode controller has been designed for the system. The fuzzy controller does not affect the coefficient of the sliding mode controller and uses the overall error of the system to make a control signal. Thus, the dependence of the controller to the model decreases and the system is more robust. The stability of the system is proved by the Lyapunov theorem.

Originality/value: The paper provides a novel design of a hand rehabilitation robot and a controller which is used to compensate the effects of the uncertain parameters and chattering phenomenon.
Subjects
Fuzzy sliding mode
Hand rehabilitation
Rehabilitation robots
Uncertainty
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