Volume 6, Issue 4 (Journal of Control, V.6, N.4 Winter 2013)                   JoC 2013, 6(4): 23-33 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

A. Khosravi M, Taghirad H R. Stability Analysis and Robust PID Control of Parallel Cable Robots with Positive Tensions. JoC. 2013; 6 (4) :23-33
URL: http://joc.kntu.ac.ir/article-1-45-en.html
1- Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology
Abstract:   (7614 Views)
In this paper dynamic analysis and robust PID control of‎‎fully-constrained parallel cable driven manipulators are studied in‎‎detail‎. ‎Since in this class of manipulators‎, ‎cables should remain in‎‎tension for all maneuvers in their workspace‎, ‎feedback control of‎‎such robots becomes more challenging than ‎that of ‎conventional parallel‎‎robots and research on this topic especially on robust stability analysis is limited‎. In this paper, structured and unstructured uncertainties are considered in the dynamic model and Jacobian of the robot, and a robust PID controller is proposed for the cable driven parallel robot. To ensure that all the cables are in‎‎tension‎, ‎a corrective term is used in the‎‎proposed PID controlbased on the internal force concept. Then, robust stability of the closed-loop system is analysed through Lyapunov’s second method and it is shown that by suitable selection of the controller gains, the closed-loop system would be robustly stable. ‎‎Finally‎, ‎the effectiveness of the‎‎proposed PID algorithm is examined through experiments on a planar‎‎cable driven robot and it is shown that the proposed control‎‎structure is able to provide suitable performance in practice‎.
Full-Text [PDF 7583 kb]   (1376 Downloads)    
Type of Article: Research paper | Subject: Special
Received: 2014/06/11 | Revised: 2014/12/21 | Accepted: 2014/06/11 | Published: 2014/06/11

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


© 2019 All Rights Reserved | Journal of Control

Designed & Developed by : Yektaweb