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- Publisher
- Emerald Publishing
- Copyright
- Copyright © Emerald Group Publishing Limited
- ISSN
- 0143-991X
- DOI
- 10.1108/IR-09-2016-0243
- Publisher site
- See Article on Publisher Site
Abstract
PurposeTo improve the trajectory tracking accuracy of 6R decoupled manipulator in singularity region, this paper aims to propose a singularity avoidance algorithm named “singularity separation plus improved Gaussian distribution damped reciprocal”.Design/methodology/approachThe manipulator is divided into forearm and wrist, and the corresponding singularity factors are separated based on kinematics calculation. Singularity avoidance is achieved by replacing the common reciprocal with the improved Gaussian distribution damped reciprocal.FindingsCompared with common damped reciprocal algorithm and classical Gaussian distribution algorithm, the continuity of the proposed algorithm is improved and the tracking error is minimized. The simulation and experiment results prove effectiveness and practicability of the proposed algorithm.Originality/valueThis study has an important significance to improve the efficiency and operation accuracy of 6R decoupled manipulator.
Journal
Industrial Robot: An International Journal – Emerald Publishing
Published: May 15, 2017