experience and innovation

AttitudeControl

Directory List

AttitudeManeuver, AttitudeTarget, GSC, GSCSupport, MagneticControl, SNPC, Demos/ACSDesigns, Demos/AttitudeManeuver, Demos/ComStar,

Functions and Demos

AttitudeManeuver

FRSCGen - Executes the fast reorientation system slew maneuver.

FRSMPlan - Plans the fast reorientation system slew maneuver.

FRSProp - Propagates the target profile for the fast reorientation system slew maneuver.

FRSTarg - Compute the target quaternion for the fast reorientation system.

FRSTorque - Calculates the required torque for the fast reorientation system slew maneuver.


AttitudeTarget

AttitudeTarget - Generate a reference quaternion for a variety of targets.


GSC

ComStar - The ComStar satellite properties database.

DST - Simulate a dual-spin-turn.

OrbitDeltaV - Updates orbital elements based on an impulsive delta-V

PitchEst - Kalman Filter for pitch

PtchLoop - Design the Pitch Loop including a tach loop for the wheel.

RollEst - Designs the dual-spin-turn roll estimator

SPMMnvr - Performs a spin precession maneuver.

SpinREst - Estimates rate from measurements of period

ThrstLvl - Computes the thrust level of a set of thrusters.

ThrstMdl - Computes the thruster torques based on an exponential rise

TrnsfOrb - Simulates transfer orbit


GSCSupport

AKMDataF - Generates the data needed to compute the AKM firing.

ATTDataT - Generates the data needed for a attitude data collection in TrnsfOrb.m

DSTDataT - Generates the data needed for a dual spin turn in TrnsfOrb.m

DlVDataT - Generates the data needed for a delta Vs in TrnsfOrb.m

FuelUpdt - Updates the fuel mass.

GetHSA - Gets HSA attitude data

HSMA - Computes the half system moment arms

InjDataT - Generates the data needed for an injection in TrnsfOrb.m

IntDataT - Generates the data needed for initialization in TrnsfOrb.m

OddEven - Count the number of odd and even numbered thrusters in use.

Pressure - Computes the REA and tank pressure

REA - Computes the thrust and fuel consumed for thrusters.

SKDataF - Generates the data needed to compute stationkeeping maneuvers

SPMDataF - Computes spin precession maneuver data for fuel budgets

SPMDataT - Generates the data needed for an SPM maneuver in TrnsfOrb.m

Shadow - Find the surfaces that are in shadow.

SpinChng - Simulates a spin change.

SpinDatF - Computes spin precession maneuver data for fuel budgets

SpnDataT - Generates the data needed for a spin change in TrnsfOrb.m


MagneticControl

MagControlThreeAxis - Dipole vector needed to produce a torque given the magnetic field over time.

MagControlTwoAxis - Computes the dipole vector needed to produce a torque t


SNPC

CDist - Finds the actuation distribution matrix that distributes a control

Core2SA - Transforms a vector from the core frame to the solar array frame

FSNP - Spacecraft with 4 RWA's and 2 solar arrays.

I2B - Transforms the sun vector defined in the ECI xz-plane into

ICSN - Initial quaternion and solar array angle given the sun geometry.

SA2Core - Transforms a vector from the sun sensor frame to the core frame

SAForm - Creates a small angle transformation matrix

SSAD - Sun sensor attitude determination.

SSOutput - Models the output for array mounted analog sun sensors.

SunBeta - Computes the sun beta angle (i.e. elevation out of the orbit plane)

SunRA - Computes the orbit right ascension angle


Demos/ACSDesigns

FRSSim - Simulate the fast reorientation system.

MagControl - Demonstrate the magnetic controllers.

MagSim - Simulate a momentum bias spacecraft with magnetic roll/yaw control.

TMAPSim - Implements and simulates the MAP normal mode control.

TMMC - Controls the momentum in a spacecraft using solar pressure.

TRYDP - Design a roll/yaw controller using a double pivot

TSNPSim - Implements and simulates Sun nadir pointing control.

Timeline - Space Shuttle on-orbit position at 520 sec.


Demos/AttitudeManeuver

QPropDemo - Simulate the fast reorientation system and demonstrate quaternion propagation


Demos/ComStar

ComStarAKM - Simulate the AKM firing for the ComStar spacecraft.

ComStarAcq - The acquisition sequence for the ComStar satellite.

ComStarBuild - Generates the mass properties for the ComStar demo satellite.

ComStarDST - Simulate the ComStar dual spin turn.

ComStarDist - Computes the total disturbance torque for the ComStar satellite.

ComStarESAN - Designs earth sensor noise filters for the ComStar satellite.

ComStarPBudget - Demonstrate a pointing budget for a typical satellite.

ComStarPD - Design a PD controller for pitch for the ComStar satellite.

ComStarPMWA - Tests the MWA pitch loop for the ComStar satellite.

ComStarRYLF - Design and test the low frequency roll/yaw control system.

ComStarRYNut - Design and test the nutation compensator.

ComStarSK - Compensate the flexible solar array on the ComStar Spacecraft.

ComStarSPM - Simulate a spin precession maneuver for ComStar.

ComStarSpinup - Demonstrate the automatic spin up for ComStar.

ComStarTO - Simulates transfer orbit for ComStar.

FlexMod - Analyze the flexible solar array on the ComStar Spacecraft.


SVN Revision: 10554


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