Path: SC/Actuator
% Simulates a pivot rotation. The pivot is rotated in two steps. The steps are timed to be exactly one half nutation period apart. The results is that the spacecraft rolls and there is no nutation. The pivot stepping motor is modeled by a high bandwidth PD controller. The gains are selected by the fields: d.pivotAngleGain d.pivotRateGain The selected gains are the highest feasible with an integration time step of 0.0625 seconds. The pivot is assumed to update every pivotUpdatePeriod. ------------------------------------------------------------------------ See also QTForm, Plot2D, TimeGUI, Jacobian, Mag, RK4, SCWithRollPivot ------------------------------------------------------------------------ % ------------------------------------------------------------------------------- Copyright (c) 1999 Princeton Satellite Systems, Inc. All rights reserved. -------------------------------------------------------------------------------
AerospaceUtils: Coord/QIToBDot SC: Dynamics/SCWithRollPivot Common: CommonData/SwooshWatermark Common: Control/C2DZOH Common: GUIs/TimeGUI Common: General/CellToMat Common: General/CloseIfHandle Common: General/MatToCell Common: General/Watermark Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle Common: Quaternion/QTForm Math: Analysis/Jacobian Math: Integration/RK4 Math: Linear/Mag Math: Linear/Skew Math: Linear/SkewSymm
Back to the SC Module page