Title: A 'Kane's dynamics' model for the active rack isolation system. Part 3: addition of umbilicals to the non-linear model

Authors: R. David Hampton, Jason K. Rupert, Geoffrey S. Beech, Nagendra N. Subba Rao, Young K. Kim

Addresses: Civil and Mechanical Engineering Department, US Military Academy, West Point, New York 10996, USA. ' Simulation and Analysis Section, Missile and Aviation Systems Department, Dynetics, Inc., 1000 Explorer Boulevard, Huntsville, Alabama 35806, USA. ' Vehicle Analysis Branch (Mail Stop: EV12), Spacecraft and Vehicle Systems Department, Engineering Directorate, NASA Marshall Space Flight Center, Huntsville, Alabama 35812, USA. ' Trans Cosmos, Inc., International Public Company, 3-25-18 Shibuya, Shibuya-ku, Tokyo, 150-8530, Japan. ' Modeling and Simulation Team, Guidance, Navigation, and Mission Analysis Branch (Mail Stop: EV42), Flight Mechanics and Analysis Division, Engineering Directorate, NASA Marshall Space Flight Center, Huntsville, Alabama 35812, USA

Abstract: Boeing|s Active Rack Isolation System (ARIS) isolates space-science experiments on the International Space Station against station-induced disturbances, at the rack-level. Part 1 of this documentation presented a linearised model of ARIS, hand-developed via Kane|s method. Part 2 reported the use of software packages to develop and verify a corresponding nonlinear model, without umbilicals. Part 3, below, reports on: umbilical addition to the nonlinear model; model verification against simple truth models. Verification checks against truth models indicate that the proposed nonlinear model, when properly calibrated against experimental data, offers a high-fidelity representation of ARIS for simulation and controller-design purposes.

Keywords: modelling; simulation; Kane|s dynamics; microgravity; ISS; international space station; active rack isolation system; Boeing; international standard payload rack; ARIS; nonlinear modelling; model verification; space science; model-based vibration isolation; controller design.

DOI: 10.1504/IJVSMT.2008.025404

International Journal of Vehicle Systems Modelling and Testing, 2008 Vol.3 No.4, pp.271 - 295

Published online: 21 May 2009 *

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