Mathematical Model for the Effect of Dynamic Parameter Posed on Free Floating Space Manipulator’s Kinematic Accuracy

Abstract:

Aiming at kinematic accuracy and its’ error sources of a free floating space robot, a mathematical kinematic error model based on the concept of virtual manipulator and screw theory is proposed in this paper for a free-floating space robot. Based on screw theory, structural parameters in the form of motion screw and their error expressions derived from various error sources are deduced. The effect of mass error, CM (Center of Mass) error and structural parameter error on the kinematic accuracy of the free-floating space manipulator is analyzed. A simulation is demonstrated for verifying the correctness of the kinematic error model and the effect of various error sources on the free-floating space robot. The error model and the result deriving from analyzing are vital for studying the kinematic accuracy of the space manipulator when it is under a free-floating mode, and for controlling and assigning various errors when a space robot is developed.

• Periodical: Advanced Materials Research (Volume 216)
• Pages: 254-260
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.216.254
• Online since: March 2011
• Authors: Yue Sheng Tan
• Keywords: Free-Floating Space Manipulator, Kinematic Error, Screw Theory, Virtual Manipulator

References

[1] CUI Nai-gang, WANG Ping, GUO Ji-feng, et al . A review of on-orbit servicing [J] . Journal of Astronautics, 2007, 28 (4): 870 -874 (in Chinese).

[2] Dubowsky S, Papadopoulos E. The kinematics, dynamics, and control of free-flying and free-floating space robotic systems [J]. IEEE Trans. on Robotics and Automation, 1993, 9 (5): 531 - 543.

DOI: 10.1109/70.258046

[3] Z. Vafa and S. Dubowsky. On the dynamics of space manipulators using the virtual manipulator with application to path planning[C]. J. Astronaut. Sci., Special Issue on Space Robotics, vol. 38, no. 4, Oct. -Dec. 1990, pp.441-472. Invited.

DOI: 10.1007/978-1-4615-3588-1_3

[4] TAN Yue-sheng, SUN Han-xu, Screw Theory Application Research in Kinematic Accuracy for Manipulator End-Effector[J]. Mechanical Science and Technology, 2006(5): 534-538(in Chinese).