@Article{CarraraOlivKuga:2014:GaBePl,
               author = "Carrara, Valdemir and Oliveira, Alexandre Macedo de and Kuga, 
                         Helio Koiti",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "A gas bearing platform attitude control for assessment of AOCS 
                         systems",
              journal = "Advances in the Astronautical Sciences",
                 year = "2014",
               volume = "152",
               number = "1",
                pages = "2677--2695",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "air bearing, Attitude control, Attitude dynamics, Extended Kalman 
                         Filter.",
             abstract = "This paper presents a solution for the development, validation and 
                         testing of attitude control system for satellites with 
                         hardware-in-the-loop dynamics and control. The system is based on 
                         a gas-bearing platform in which several sensors and actuators, 
                         similar to those usually employed in satellites (engineering 
                         models) were fixed. Magnetometers and gyroscopes are easily 
                         incorporated to the platform, but sun sensors and star sensors are 
                         more difficult. The solar sensors are replaced by a tri-axes 
                         accelerometer, while the star sensor relies on direct night sky 
                         measurements. Although hot gas thrusters cannot be used, both 
                         magnetic torque coils and reaction wheels are feasible to be 
                         incorporated to the arrangement. The gas-bearing balancing process 
                         is critical for real satellite dynamic simulation and therefore 
                         the solution is addressed in this work, by means of a non-linear 
                         filtering of the sensor readings. The filtering process also 
                         obtains the platform mass properties. In order to increase the 
                         filter accuracy the gyroscopes were calibrated; the calibration 
                         results are also presented here. Finally, an attitude controller 
                         was implemented in the platform and the control performance was 
                         analyzed and shown together with the conclusions.",
                 issn = "0065-3438",
                label = "lattes: 0288494962313241 1 CarraraOlivKuga:2014:GaBePl",
             language = "en",
           targetfile = "Carrara_Gas.pdf",
        urlaccessdate = "27 abr. 2024"
}