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Abstract:
Space robot would inevitably contact and impact with satellites during the capture operations. If the joints were not effectively protected in this process, it was easy to cause the failures of the capture operations. Therefore, a spring-damper device(SDD) between the joint motors and the manipulators was proposed and added, the device might absorb the impact energy and suppressed the flexible vibrations, and might mathch the designed compliance strategy designed to achieve compliance of capture operations. The dynamics model of dual-arm space robot open-loop system and satellite system before capture was established by using Lagrange function based on dissipation theory and Newton-Euler function respectively. Combined with Newton's third law, velocity constraints of capture points, closed-chain geometric constraints, the closed-chain dynamics model of hybrid system after capture was obtained, and the impact effects and impact forces were calculated by utilizing the momentum conservation. Based on the barrier Lyapunov functions, a state constraint control method was designed to realize high-precision tracking of trajectory, the influences of system parameter uncertainty were solved by fuzzy adaptive controller. The stability of the system was proved by Lyapunov theorem, and the impact resistance of the device and the effectiveness of the proposed strategy were verified by numerical simulations. © 2022 China Mechanical Engineering Magazine Office. All rights reserved.
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China Mechanical Engineering
ISSN: 1004-132X
CN: 42-1294/TH
Year: 2022
Issue: 24
Volume: 33
Page: 2997-3006
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 3
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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