BallastMass2Axis:

% Attitude control of a sail using ballast masses in-plane.
  Demonstrates control of a single axis using a simple PID controller.
  This uses a fixed-rate dynamics model that is suitable for masses that 
  are controlled by stepper motors. 

  Demonstrates:
     PlateWithMasses
     PIDMIMO
     FMovingBody and FCoreAndMoving
     TorqueToCM
     CMToMassPositions

   Since version 7.
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  See also AC, PIDMIMO, QTForm, QZero, Plot2D, Cross, RK4, 
  CMToMassPositions, TorqueToCM, FCoreAndMoving, FMovingBody
  ------------------------------------------------------------------------
%
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   Copyright (c) 2006 Princeton Satellite Systems, Inc.
   All rights reserved.
   This file is referenced for listings in the User's Guide.
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Children:

Common: Control/PIDMIMO
Common: Graphics/Plot2D
Common: Quaternion/QTForm
Common: Quaternion/QZero
Math: Integration/RK4
Math: Linear/Cross
Sail: Actuator/CMToMassPositions
Sail: Actuator/TorqueToCM
Sail: AttitudeDynamics/FCoreAndMoving
Sail: AttitudeDynamics/FMovingBody