Abstract
The impact dynamics, impact effect, and post-impact unstable motion suppression of free-floating space manipulator capturing a satellite on orbit are analyzed. Firstly, the dynamics equation of free-floating space manipulator is derived using the second Lagrangian equation. Combining the momentum conservation principle, the impact dynamics and effect between the space manipulator end-effector and satellite of the capture process are analyzed with the momentum impulse method. Focusing on the unstable motion of space manipulator due to the above impact effect, a robust adaptive compound control algorithm is designed to suppress the above unstable motion. There is no need to control the free-floating base position to save the jet fuel. Finally, the simulation is proposed to show the impact effect and verify the validity of the control algorithm.
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Abbreviations
- B 0 :
-
free-floating base
- B i :
-
link of manipulator (i = 1, 2)
- B 3 :
-
target satellite
- O 0 :
-
centre of free-floating base
- O i :
-
joint centre (i = 1, 2)
- O-XY :
-
inertial coordinate
- O i -X i Y i :
-
local coordinate of B i (i = 0, 1, 2)
- C m :
-
centre of target satellite
- P :
-
end-effector of space manipulator
- P′:
-
handle on satellite surface which impact with end-effector of manipulator
- l 0 :
-
distance between O 0 and O 1
- l i :
-
length of link B i (i = 1, 2)
- l 3 :
-
distance between C m and P′
- m i :
-
mass of B i (i = 0, 1, 2, 3)
- J i :
-
center inertial momentum of B i (i=0, 1, 2, 3)
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Project supported by the National Natural Science Foundation of China (Nos. 11072061 and 11372073) and the Natural Science Foundation of Fujian Province (No. 2010J01003)
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Dong, Qh., Chen, L. Impact dynamics analysis of free-floating space manipulator capturing satellite on orbit and robust adaptive compound control algorithm design for suppressing motion. Appl. Math. Mech.-Engl. Ed. 35, 413–422 (2014). https://doi.org/10.1007/s10483-014-1801-7
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DOI: https://doi.org/10.1007/s10483-014-1801-7