Path planning of free-flying space manipulators: an exact solution for polar robots

Abstract Motion planning for free-flying robots can be quite complex due to the fact that any movement of the joints influences the position and the orientation of the spacecraft which carries the manipulator. Several studies have been carried out to plan joint trajectories which eliminate the effects of the dynamic disturbances. Approximate solutions to this problem have been proposed using the concept of the Disturbance Map. The authors have already studied this problem for the case of 2 DOF and 3 DOF planar robots connected with revolute joints developing an exact solution based on the concept of dynamic singularities. Aim of this paper is to extend the proposed methodology to the case of planar polar manipulators, analyzing the peculiarities of these robot arm configurations. A numerical procedure for the evaluation of zero disturbance trajectories is also presented and application examples are developed. The adoption of the proposed strategy improves the performances of spacecraft’s attitude control system.

[1]  Federico Casolo,et al.  A contribution to the dynamics of free-flying space manipulators , 1999 .

[2]  Fengfeng Xi,et al.  Inverse kinematics of free-floating space robots with minimum dynamic disturbance , 1996, Robotica.

[3]  S. Dubowsky,et al.  Dynamic Singularities in Free-floating Space Manipulators , 1993 .

[4]  Steven Dubowsky,et al.  On the dynamics of manipulators in space using the virtual manipulator approach , 1987, Proceedings. 1987 IEEE International Conference on Robotics and Automation.

[5]  Mitsushige Oda,et al.  Coordinated control of spacecraft attitude and space manipulators , 1997 .

[6]  Richard W. Longman,et al.  Satellite-Mounted Robot Manipulators — New Kinematics and Reaction Moment Compensation , 1987 .

[7]  Bruno Siciliano,et al.  Kinematic control of redundant free-floating robotic systems , 2001, Adv. Robotics.

[8]  Steven Dubowsky,et al.  Coordinated manipulator/spacecraft motion control for space robotic systems , 1991, Proceedings. 1991 IEEE International Conference on Robotics and Automation.

[9]  Dale B. Cherchas,et al.  Motion control of non-fixed base robotic manipulators , 1999, Robotica.

[10]  Craig R. Carignan,et al.  The reaction stabilization of on-orbit robots , 2000 .

[11]  Kazuya Yoshida,et al.  Resolved motion rate control of space manipulators with generalized Jacobian matrix , 1989, IEEE Trans. Robotics Autom..

[12]  So-Ryeok Oh,et al.  Design of differentially flat planar space robots: a step forward in their planning and control , 2003, Proceedings 2003 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2003) (Cat. No.03CH37453).

[13]  Steven Dubowsky,et al.  Path planning for space manipulators to minimize spacecraft attitude disturbances , 1991, Proceedings. 1991 IEEE International Conference on Robotics and Automation.