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Path: Orbit/OrbitControl
% Creates a linear quadratic relative orbit controller. Assumes full state feedback. This means that relative position and velocity must be available as measurements. This would be the case with GPS. The controller has control along x and y. No control is available along the radial direction. If aD or x0 are entered it will run a simulation. The plant model is found in LinOrb.m. The gain produces a control in units km/sec^2. To convert to N multiply k by 1000*mass. To run an demo without control enter q as a zero matrix. -------------------------------------------------------------------------- Form: k = LQOrbitController( x, q, r, dT, aD, mu ) -------------------------------------------------------------------------- ------ Inputs ------ x (6,1) State [x;y;z;dX;dY;dZ] q (6,6) State cost matrix r (3,1) Control cost matrix dT (1,1) Time step aD (3,1) Disturbance acceleration vector mu (1,1) Gravitational parameter (default is earth) ------- Outputs ------- k (2,6) Gain matrix [in track; out of track] -------------------------------------------------------------------------- See also C2DZOH, LinOrb --------------------------------------------------------------------------
Common: Control/C2DZOH Common: Control/DQCR Common: Database/Constant Common: Graphics/Plot2D Orbit: RHSOrbit/LinOrb SC: BasicOrbit/El2RV SC: BasicOrbit/Period
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