31 May 2006 Dynamics of a robotics-based hardware-in-the-loop simulator for verifying microgravity contact dynamics
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Abstract
This paper presents the concept of a cable-manipulator based 6-DOF hardware-in-the-loop (HIL) dynamics simulation system for testing and verification of microgravity contact-dynamics behavior of a space system. It then focuses on the inverse dynamics problem of the 6-DOF cable-driven manipulator which is designed for the simulation system. Accurate modeling and solution of the inverse dynamics is a key requirement for the control and high-fidelity performance of the complex simulation system. The inverse dynamics problem is solved completely under the basic operational conditions of a cable manipulator - all the cables must be always in tension for any possible end-effector motion of the manipulator. It is the first time that a systematic method of determining whether or not the inverse dynamics problem has a solution is proposed with full mathematical proof. Based upon this proven method, two numerical examples are presented to demonstrate the inverse dynamics solution of a 6-DOF cable manipulator. The study results support the feasibility of using such a manipulator for hardware-in-the-loop simulation of microgravity contact-dynamics.
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Xiumin Diao, Ou Ma, Michael Liu, "Dynamics of a robotics-based hardware-in-the-loop simulator for verifying microgravity contact dynamics", Proc. SPIE 6221, Modeling, Simulation, and Verification of Space-based Systems III, 622104 (31 May 2006); doi: 10.1117/12.665245; https://doi.org/10.1117/12.665245
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