Vision-based Computed Torque Control for Parallel Robots

This paper presents a novel approach to dynamic control of parallel robots based on the end-effector pose and velocity visual measurement. We show that computed torque control in joint space is unsuitable for parallel robots and that computed torque control in Cartesian space requires the end-effector pose and velocity estimation. Relying on a recent work showing ability of camera to measure both the pose and the velocity of a mobile object, we propose an original vision-based computed torque control scheme. Improvements are discussed and simulation results show the expected performances

[1]  D. Stewart,et al.  A platform with 6 degrees of freedom , 1966 .

[2]  Jean-Pierre Merlet,et al.  Parallel Robots , 2000 .

[3]  R. Paul.  Robot manipulators : mathematics, programming, and control : the computer control of robot manipulators , 1981 .

[4]  David G. Lowe,et al.  Fitting Parameterized Three-Dimensional Models to Images , 1991, IEEE Trans. Pattern Anal. Mach. Intell..

[5]  Wisama Khalil,et al.  General Solution for the Dynamic Modeling of Parallel Robots , 2007, J. Intell. Robotic Syst..

[6]  Wisama Khalil,et al.  Modeling, Identification and Control of Robots , 2003 .

[7]  Manfred L. Husty.  An Algorithm for Solving the Direct Kinematic Of Stewart-Gough-Type Platforms , 1994 .

[8]  Grigore Gogu.  Fully-Isotropic T3R1-Type Parallel Manipulators , 2004 .

[9]  D. Stewart.  A Platform with Six Degrees of Freedom , 1965 .

[10]  Patrick Rives,et al.  A new approach to visual servoing in robotics , 1992, IEEE Trans. Robotics Autom..

[11]  Chien Chern Cheah,et al.  A Motion Control Scheme in Task Oriented Coordinates and its Robustness for Parallel Wire Driven Systems , 2000 .

[12]  Larry S. Davis,et al.  Model-based object pose in 25 lines of code , 1992, International Journal of Computer Vision.

[13]  John C. Ziegert,et al.  Fundamental Comparison of the Use of Serial and Parallel Kinematics for Machines Tools , 1999 .

[14]  Jacques Gangloff.  Asservissements visuels rapides d'un robot manipulateur a 6 degres de liberte , 1999 .

[15]  Lee E. Weiss,et al.  Dynamic sensor-based control of robots with visual feedback , 1987, IEEE Journal on Robotics and Automation.

[16]  J. Merlet.  An algorithm for the forward kinematics of general parallel manipulators , 1991, Fifth International Conference on Advanced Robotics 'Robots in Unstructured Environments.

[17]  Liping Wang,et al.  Inverse dynamics and simulation of a 3-DOF spatial parallel manipulator , 2003, 2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422).

[18]  Jorge Angeles,et al.  The direct kinematics of parallel manipulators under joint-sensor redundancy , 2000, IEEE Trans. Robotics Autom..

[19]  Damien Chablat,et al.  Kinematic Analysis of a New Parallel Machine Tool: the Orthoglide , 2007, ArXiv.

[20]  Philippe Martinet,et al.  Pose and velocity computing of fast moving object using a single view from rolling shutter camera , 2006 .

[21]  J. Y. S. Luh,et al.  On-Line Computational Scheme for Mechanical Manipulators , 1980 .