@InCollection{FreitasRicc:2002:PrAp,
               author = "Freitas, Wantuir Aparecido and Ricci, M{\'a}rio Cesar",
                title = "Reduction of structural vibrations induced by solar array drive 
                         mechanisms, in artificial satellites, using input shaping control 
                         techniques: a preliminary approach",
            booktitle = "Advances in space dynamics 3: applications in astronautics",
            publisher = "INPE",
                 year = "2002",
               editor = "Winter, Othon Cabo and Prado, Antonio Fernando Bertachini de 
                         Almeida",
                pages = "210--225",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "ENGENHARIA E TECNOLOGIA ESPACIAL, artificial satellites, solar 
                         array, structural vibrations, Solar Array Drive Assembley 
                         (SADA).",
             abstract = "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.",
                label = "10455",
                  ibi = "6qtX3pFwXQZ3r59YCT/H3JDP",
                  url = "http://urlib.net/ibi/6qtX3pFwXQZ3r59YCT/H3JDP",
          seriestitle = "Advances in space dynamics 3: applications in astronautics",
           targetfile = "INPE-9527.pdf",
        urlaccessdate = "27 abr. 2024"
}