|
SUPPORT SITE |
|
|
|
SUPPORT SITE |
|
Path: SC/MagneticControl
% Two axis magnetic control dipole Computes the dipole vector needed to produce a torque t given the magnetic field b. This minimizes the weighted sum of the following cost functional: J = (t + Cross(b,m))'(t + Cross(b,m))' + m'm Only two elements of t can be constrained. These axes are selected using the vector a. The other component of t will be uncontrolled. Any time the components of b corresponding to the constrained components of t are aligned this algorithm will demand very large dipoles. If b is not entered it computes the magnetic field for an orbit whose radius is 7000 km and inclination is 28.4 deg. The default t is [1e-5;1e-5] and the default a is [1;2]. The demo is run by typing: MagControlTwoAxis The dipole results are in ATM^2. -------------------------------------------------------------------------- Form: [m, e] = MagControlTwoAxis( t, b, a ) -------------------------------------------------------------------------- ------ Inputs ------ t (2,1) Torque b (3,:) Magnetic field vector in the torque frame a (2,1) Axes corresponding to the values in t ------- Outputs ------- m (3,:) Magnetic dipole vector needed e (3,:) Torque error --------------------------------------------------------------------------
AerospaceUtils: Coord/QLVLH Common: Graphics/Plot2D Common: Quaternion/QForm Common: Time/JD2000 Math: Linear/Skew SC: BasicOrbit/RVFromKepler SC: Environs/BDipole
Back to the SC Module page