Title: A 'Kane's Dynamics' model for the active rack isolation system. Part One: a linearised model

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

Addresses: Civil and Mechanical Engineering Department, US Military Academy, West Point, New York 10996, USA. ' Vehicle Analysis Branch (Mail Stop: EV12), Spacecraft and Vehicle Systems Department, Engineering Directorate, NASA Marshall Space Flight Center, Huntsville, Alabama 35812, USA. ' Japan-228-001, Kanagawa Ken, Zama Shi, Sagamigaoka-1-34-20, Granero Yosiyama-201, Japan. ' Simulation and Analysis Section, Missile and Aviation Systems Department, Dynetics, Inc., 1000 Explorer Boulevard, Huntsville, Alabama 35806, USA. ' Control Systems Design and Analysis Branch (Mail Stop: EV41), Flight Mechanics and Analysis Division, Engineering Directorate, NASA Marshall Space Flight Center, Huntsville, Alabama 35812, USA

Abstract: Many microgravity space-science experiments require vibratory acceleration levels unachievable without active isolation. The Boeing Corporation|s Active Rack Isolation System (ARIS) addresses these isolation requirements on the International Space Station (ISS) at the rack level. Effective model-based vibration isolation requires: an appropriate isolation device; an adequate dynamical model of that isolator; and a suitable, corresponding controller. ARIS provides the ISS response to the first requirement. This paper presents the use of |Kane|s Dynamics| to develop a state-space, analytical (algebraic) set of linearised equations of motion meeting the second requirement, for use in addressing the third via optimal controller design.

Keywords: modelling; simulation; Kane|s dynamics; international space station; ISS; active rack isolation; microgravity; space science; model-based vibration isolation; dynamic modelling; equations of motion; optimal control; controller design.

DOI: 10.1504/IJVSMT.2007.013893

International Journal of Vehicle Systems Modelling and Testing, 2007 Vol.2 No.2, pp.153 - 192

Published online: 01 Jun 2007 *

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