J. Duffy

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Research Focus

Key Achievements

Top Papers

1. 1
   Hybrid Twist and Wrench Control for a Robotic Manipulator

   216 citations · 1988
2. 2
   A Direct Determination of the Instantaneous Kinematics of Fully Parallel Robot Manipulators

   190 citations · 1985
3. 3
   Special configurations of spatial mechanisms and robot arms

   165 citations · 1982
4. 4
   The Elliptic Polarity of Screws

   105 citations · 1985
5. 5
   Determination of Extreme Distances of a Robot Hand—Part 1: A General Theory

   61 citations · 1981
6. 6
   Determination of Extreme Distances of a Robot Hand. Part 2: Robot Arms With Special Geometry

   41 citations · 1981
7. 7
   Sir Robert Stawell Ball and methodologies of modern screw theory

   21 citations · 2002
8. 8
   Analysis of Five-Degree-of-Freedom Robot Arms

   17 citations · 1983
9. 9
   A Theory for the Articulation of Planar Robots: Part I—Kinematic Analysis for the Flexure and the Parallel Operation of Robots

   12 citations · 1987
10. 10
    On the Geometry of Orthogonal and Reciprocal Screws

    10 citations · 1985

Key Collaborators