Paper Info
Title
Robust Adaptive Control Of Fully Constrained Cable-Driven Serial Manipulator With Multi-Segment Cables Using Cable Tension Sensor Measurements
Abstract
The structure of the cable-driven serial manipulator (CDSM) is more complex than that of the cable-driven parallel manipulator (CDPM), resulting in higher model complexity and stronger structural and parametric uncertainties. These drawbacks challenge the stable trajectory-tracking control of a CDSM. To circumvent these drawbacks, this paper proposes a robust adaptive controller for an n-degree-of-freedom (DOF) CDSM actuated by m cables. First, two high-level controllers are designed to track the joint trajectory under two scenarios, namely known and unknown upper bounds of uncertainties. The controllers include an adaptive feedforward term based on inverse dynamics and a robust control term compensating for the uncertainties. Second, the independence of control gains from the upper bound of uncertainties and the inclusion of the joint viscous friction coefficient into the dynamic parameter vector are realised. Then, a low-level controller is designed for the task of tracking the cable tension trajectory. The system stability is analysed using the Lyapunov method. Finally, the validity and effectiveness of the proposed controllers are verified by experimenting with a three-DOF six-cable CDSM. In addition, a comparative experiment with the classical proportional-integral-derivative (PID) controller is carried out.
Year
DOI
Venue
2021
10.3390/s21051623
SENSORS
Keywords
DocType
Volume
cable-driven serial manipulators, adaptive robust control, stability analysis, upper bound of uncertainty
Journal
21
Issue
ISSN
Citations 
5
1424-8220
1
PageRank 
References 
Authors
0.43
0
5
Name
Order
Citations
PageRank
Ya'nan Lou110.43
Haoyu Lin210.43
Pengkun Quan310.43
Dongbo Wei410.43
Shichun Di520.80