Workspace optimization of a two degree of freedom mini parallel robot

2006 ◽  
Author(s):  
S. Stan
Keyword(s):  
Parallel Robot ◽  
Degree Of Freedom ◽  
Workspace Optimization ◽  
Two Degree Of Freedom

scholarly journals IRSBot-2: A Novel Two-DOF Parallel Robot for High-Speed Operations

2011 ◽  
Author(s):  
Coralie Germain ◽  
Se´bastien Briot ◽  
Victor Glazunov ◽  
Ste´phane Caro ◽  
Philippe Wenger
Keyword(s):  
High Speed ◽  
Parallel Robot ◽  
Degree Of Freedom ◽  
Kinematic Chains ◽  
Robot Architecture ◽  
Intrinsic Stiffness ◽  
Two Degree Of Freedom

This paper presents a novel two-degree-of-freedom (DOF) translational parallel robot for high-speed applications named the IRSBot-2 (acronym for IRCCyN Spatial Robot with 2 DOF). Unlike most two-DOF robots dedicated to planar translational motions, this robot has two spatial kinematic chains which confers a very good intrinsic stiffness. First, the robot architecture is described. Then, its actuation and constraint singularities are analyzed. Finally, the IRSBot-2 is compared to its two-DOF counterparts based on elastostatic performances.

Workspace optimization of a class of zero-torsion parallel wrists

Robotica ◽  
2018 ◽  
Vol 37 (7) ◽  
pp. 1174-1189 ◽  
Author(s):  
Yuanqing Wu ◽  
Marco Carricato
Keyword(s):  
Tilt Angle ◽  
General Class ◽  
Parallel Manipulators ◽  
Degree Of Freedom ◽  
Geometric Properties ◽  
Large Rotation ◽  
Workspace Optimization ◽  
Two Degree Of Freedom

SUMMARYWe present singularity-free workspace optimization of a class of two-degree-of-freedom (2-DoF) parallel wrists with large rotation range capability. The wrists in consideration are kinematically equivalent to two families of 2-DoF homokinetic couplings. The first family comprises fully parallel wrists with N (N ≥ 3) double-universal ($\mathcal{UU}$) legs. The second family comprises spherical N-$\mathcal{UU}$ parallel wrists with interconnecting revolute ($\mathcal{R}$) joints. Both families belong to the more general class of zero-torsion parallel manipulators, and are, therefore, collectively referred to as zero-torsion wrists (ZTWs). We carry out a unified singularity-free workspace optimization by utilizing geometric properties of zero-torsion motion manifolds. Our work may serve as a conceptual guide to the design of ZTWs for large tilt-angle applications.

scholarly journals Two-degree-of-freedom internal model position control and fuzzy fractional force control of nonlinear parallel robot

2019 ◽  
Vol 50 (12) ◽  
pp. 2261-2279 ◽  
Author(s):  
Shuhuan Wen ◽  
Di Zhang ◽  
Baowei Zhang ◽  
Hak Keung Lam ◽  
Hongbin Wang ◽  
...  
Keyword(s):  
Force Control ◽  
Internal Model ◽  
Position Control ◽  
Parallel Robot ◽  
Degree Of Freedom ◽  
Two Degree Of Freedom
Sign in / Sign up

Export Citation Format

Share Document