NDLI: A Comparison Study of Three Degree-of-Freedom Micro-motion Parallel Kinematic Machines with/without Actuation Redundancy

Content Provider	IEEE Xplore Digital Library
Author	Dan Zhang Qi Shi Jian Li
Copyright Year	2010
Abstract	This paper presents a comparison study of two unique micro-motion parallel kinematic manipulators (PKM): a three degrees of freedom (DOF) micro-motion PKM and a 3-DOF micro-motion PKM with actuation redundancy. The 3-DOF micro-motion PKM has three linear-motion driving units, while the 3-DOF micro-motion PKM with actuator redundancy has four of these units. For both designs, the linear motion driving units are identical and both machines have the same passive link in the middle of the structure. The manipulator with actuator redundancy is designed to prevent singularity and to improve stiffness. The inverse kinematics and Jacobian of these two PKMs are analyzed, the stiffness properties are determined and global stiffness is optimized using genetic algorithm. A comparison of the global stiffness indicates that the 3-DOF micro motion PKM with actuator redundancy outperforms the one without actuator redundancy.
Starting Page	239
Ending Page	245
File Size	682647
Page Count	7
File Format	PDF
ISBN	9781424490189
DOI	10.1109/ICMA.2010.16
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Jacobian matrices Actuators Stiffness analysis Redundancy Kinematics Actuation redundancy Manipulators Performance optimization Parallel kinematic manipulator Joints Leg Genetic algorithms
Content Type	Text
Resource Type	Article

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