%0 Book Section
%@nexthigherunit 8JMKD3MGPCW/446AF4B
%3 INPE-9527.pdf
%X This paper introduces a preliminary insight into the field of the control of the structural vibrations induced by actuators in artificial satellites. Actually, the subject is in development at DMC/INPE as a master's dissertation proposition and the main aspects concerned with the theme will be described here. Structural vibrations induced by actuators can be minimized through the effective use of feedforward input shaping. Actuators commands are convoluted with an input shaping function to yield an equivalent shaped set of actuator commands. The shaped commands are designed to achieve the desired maneuver and minimize the residual structural vibrations. In this research input shaping is being extended for stepper motor actuators. An input shaping technique based on pole-zero cancellation is to be used to modify the the Solar Array Drive Assembley (SADA)stepper motor commands for a hypothetical satellite. A series of impulses shall be calculate as the ideal SADA output for vibration control and shall be discretized for use by de SADA actuator. Simulations of the SADA's torques shall be used to calculate the linear structural response and we intent to maintain residual vibrations below the magnitude of baseline cases. This work shows an introduction, a review of the literature, the pole-zero cancellation theory for discrete time systems evolving robustness and multiple-mode considerations and the shaper's time domain implementation. The extension of theory for stepper motors and error criteria for ranking of the many possible input shaper solutions also are shown.
%@secondarydate 20021213
%E Winter, Othon Cabo,
%E Prado, Antonio Fernando Bertachini de Almeida,
%T Reduction of structural vibrations induced by solar array drive mechanisms, in artificial satellites, using input shaping control techniques: a preliminary approach
%S Advances in space dynamics 3: applications in astronautics
%@format ISBN 85-17-00006-4
%@secondarytype PRE LN
%K ENGENHARIA E TECNOLOGIA ESPACIAL, artificial satellites, solar array, structural vibrations, Solar Array Drive Assembley (SADA).
%B Advances in space dynamics 3: applications in astronautics
%@usergroup administrator
%@group DMC-INPE-MCT-BR
%C São José dos Campos
%@secondarykey INPE-9527-PRE/5180
%F 10455
%2 sid.inpe.br/iris@1905/2005/08.04.01.54.34
%I INPE
%P 210-225
%4 sid.inpe.br/iris@1905/2005/08.04.01.54
%D 2002
%@documentstage not transferred
%A Freitas, Wantuir Aparecido,
%A Ricci, Mário Cesar,
%@area ETES
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}