@Article{LopesCarrKuga:2019:StMoFr,
               author = "Lopes, Rafael Anderson Martins and Carrara, Valdemir and Kuga, 
                         H{\'e}lio Koiti",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Stepwise modeling with friction/inertia effects separation and 
                         velocity control with dynamic compensation of a reaction wheel",
              journal = "Computational and Applied Mathematics",
                 year = "2019",
               volume = "38",
               number = "1",
                pages = "e20",
                month = "Mar.",
             keywords = "Reaction wheel · Friction/inertia modeling · Velocity control · 
                         Dynamic compensation.",
             abstract = "Reaction wheels have been largely employed as primary actuators in 
                         attitude control systems to perform pointing functions in Earth 
                         observation satellites. Their dynamic behavior characterization 
                         and proper velocity control are relevant tasks in the scope of 
                         attitude control design. In this work, a given reaction wheel is 
                         evaluated. Firstly, a stepwise identification procedure is applied 
                         to obtain the dynamic model. Separated tests are proposed to 
                         highlight the contribution of friction and inertia forces in the 
                         underlying dynamics and to estimate their respective parameters. 
                         Then, this model is used in a design of a velocity control law for 
                         the reaction wheel. A structure with a model-based dynamic 
                         compensation, a proportional-integral (PI) feedback loop and a 
                         pre-filter is proposed to obtain smoother behavior in velocity 
                         reversals and tracking performance in a determined velocity range. 
                         A comparison between the proposed controller with the feedback PI 
                         control and pre-filter only shows a clear advantage of using the 
                         dynamic compensation.",
                  doi = "10.1007/s40314-019-0784-x",
                  url = "http://dx.doi.org/10.1007/s40314-019-0784-x",
                 issn = "2238-3603",
             language = "en",
           targetfile = "lopes_stepwise.pdf",
        urlaccessdate = "20 abr. 2024"
}