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This commit is contained in:
Marius Eggert 2023-02-20 15:59:01 +01:00
parent 700d7ced64
commit 04e1cb52ac
5 changed files with 120 additions and 133 deletions

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@ -249,26 +249,21 @@ void AcsController::performPointingCtrl() {
satRotRate[3] = {0, 0, 0}, errorSatRotRate[3] = {0, 0, 0}; satRotRate[3] = {0, 0, 0}, errorSatRotRate[3] = {0, 0, 0};
switch (submode) { switch (submode) {
case acs::PTG_IDLE: case acs::PTG_IDLE:
guidance.targetQuatPtgSun(&sensorValues, &mekfData, &susDataProcessed, &gpsDataProcessed, now, guidance.targetQuatPtgSun(susDataProcessed.sunIjkModel.value, targetQuat, targetSatRotRate);
targetQuat, refSatRate); guidance.comparePtg(mekfData.quatMekf.value, mekfData.satRotRateMekf.value, targetQuat,
std::memcpy(quatRef, acsParameters.targetModeControllerParameters.quatRef, targetSatRotRate, errorQuat, errorSatRotRate, errorAngle);
4 * sizeof(double));
enableAntiStiction = acsParameters.targetModeControllerParameters.enableAntiStiction;
guidance.comparePtg(targetQuat, &mekfData, quatRef, refSatRate, quatErrorComplete, quatError,
deltaRate);
ptgCtrl.ptgLaw(&acsParameters.targetModeControllerParameters, quatError, deltaRate,
*rwPseudoInv, torquePtgRws);
ptgCtrl.ptgNullspace( ptgCtrl.ptgNullspace(
&acsParameters.targetModeControllerParameters, &(sensorValues.rw1Set.currSpeed.value), &acsParameters.idleModeControllerParameters, &(sensorValues.rw1Set.currSpeed.value),
&(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw3Set.currSpeed.value),
&(sensorValues.rw4Set.currSpeed.value), rwTrqNs); &(sensorValues.rw4Set.currSpeed.value), rwTrqNs);
VectorOperations<double>::add(torquePtgRws, rwTrqNs, torqueRws, 4); VectorOperations<double>::add(torquePtgRws, rwTrqNs, torqueRws, 4);
actuatorCmd.scalingTorqueRws(torqueRws, torqueRwsScaled); actuatorCmd.scalingTorqueRws(torqueRws, torqueRwsScaled);
ptgCtrl.ptgDesaturation( ptgCtrl.ptgDesaturation(
&acsParameters.targetModeControllerParameters, mgmDataProcessed.mgmVecTot.value, &acsParameters.idleModeControllerParameters, mgmDataProcessed.mgmVecTot.value,
mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value, mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value,
&(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value),
&(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes); &(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes);
enableAntiStiction = acsParameters.idleModeControllerParameters.enableAntiStiction;
break; break;
case acs::PTG_TARGET: case acs::PTG_TARGET:
@ -296,17 +291,15 @@ void AcsController::performPointingCtrl() {
mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value, mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value,
&(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value),
&(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes); &(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes);
enableAntiStiction = acsParameters.targetModeControllerParameters.enableAntiStiction;
break; break;
case acs::PTG_TARGET_GS: case acs::PTG_TARGET_GS:
guidance.targetQuatPtgGs(&sensorValues, &mekfData, &susDataProcessed, &gpsDataProcessed, now, guidance.targetQuatPtgGs(now, gpsDataProcessed.gpsPosition.value,
targetQuat, refSatRate); susDataProcessed.sunIjkModel.value, targetQuat, targetSatRotRate);
std::memcpy(quatRef, acsParameters.targetModeControllerParameters.quatRef, guidance.comparePtg(mekfData.quatMekf.value, mekfData.satRotRateMekf.value, targetQuat,
4 * sizeof(double)); targetSatRotRate, errorQuat, errorSatRotRate, errorAngle);
enableAntiStiction = acsParameters.targetModeControllerParameters.enableAntiStiction; ptgCtrl.ptgLaw(&acsParameters.targetModeControllerParameters, errorQuat, errorSatRotRate,
guidance.comparePtg(targetQuat, &mekfData, quatRef, refSatRate, quatErrorComplete, quatError,
deltaRate);
ptgCtrl.ptgLaw(&acsParameters.targetModeControllerParameters, quatError, deltaRate,
*rwPseudoInv, torquePtgRws); *rwPseudoInv, torquePtgRws);
ptgCtrl.ptgNullspace( ptgCtrl.ptgNullspace(
&acsParameters.targetModeControllerParameters, &(sensorValues.rw1Set.currSpeed.value), &acsParameters.targetModeControllerParameters, &(sensorValues.rw1Set.currSpeed.value),
@ -319,16 +312,16 @@ void AcsController::performPointingCtrl() {
mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value, mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value,
&(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value),
&(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes); &(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes);
enableAntiStiction = acsParameters.targetModeControllerParameters.enableAntiStiction;
break; break;
case acs::PTG_NADIR: case acs::PTG_NADIR:
guidance.targetQuatPtgNadirThreeAxes(&sensorValues, &gpsDataProcessed, &mekfData, now, guidance.targetQuatPtgNadirThreeAxes(&sensorValues, &gpsDataProcessed, &mekfData, now,
targetQuat, refSatRate); targetQuat, refSatRate);
std::memcpy(quatRef, acsParameters.nadirModeControllerParameters.quatRef, 4 * sizeof(double)); std::memcpy(quatRef, acsParameters.nadirModeControllerParameters.quatRef, 4 * sizeof(double));
enableAntiStiction = acsParameters.nadirModeControllerParameters.enableAntiStiction;
guidance.comparePtg(targetQuat, &mekfData, quatRef, refSatRate, quatErrorComplete, quatError, guidance.comparePtg(targetQuat, &mekfData, quatRef, refSatRate, quatErrorComplete, quatError,
deltaRate); deltaRate);
ptgCtrl.ptgLaw(&acsParameters.nadirModeControllerParameters, quatError, deltaRate, ptgCtrl.ptgLaw(&acsParameters.nadirModeControllerParameters, errorQuat, errorSatRotRate,
*rwPseudoInv, torquePtgRws); *rwPseudoInv, torquePtgRws);
ptgCtrl.ptgNullspace( ptgCtrl.ptgNullspace(
&acsParameters.nadirModeControllerParameters, &(sensorValues.rw1Set.currSpeed.value), &acsParameters.nadirModeControllerParameters, &(sensorValues.rw1Set.currSpeed.value),
@ -341,13 +334,13 @@ void AcsController::performPointingCtrl() {
mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value, mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value,
&(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value),
&(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes); &(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes);
enableAntiStiction = acsParameters.nadirModeControllerParameters.enableAntiStiction;
break; break;
case acs::PTG_INERTIAL: case acs::PTG_INERTIAL:
guidance.targetQuatPtgInertial(targetQuat, refSatRate); guidance.targetQuatPtgInertial(targetQuat, refSatRate);
std::memcpy(quatRef, acsParameters.inertialModeControllerParameters.quatRef, std::memcpy(quatRef, acsParameters.inertialModeControllerParameters.quatRef,
4 * sizeof(double)); 4 * sizeof(double));
enableAntiStiction = acsParameters.inertialModeControllerParameters.enableAntiStiction;
guidance.comparePtg(targetQuat, &mekfData, quatRef, refSatRate, quatErrorComplete, quatError, guidance.comparePtg(targetQuat, &mekfData, quatRef, refSatRate, quatErrorComplete, quatError,
deltaRate); deltaRate);
ptgCtrl.ptgLaw(&acsParameters.inertialModeControllerParameters, quatError, deltaRate, ptgCtrl.ptgLaw(&acsParameters.inertialModeControllerParameters, quatError, deltaRate,
@ -363,6 +356,7 @@ void AcsController::performPointingCtrl() {
mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value, mgmDataProcessed.mgmVecTot.isValid(), mekfData.satRotRateMekf.value,
&(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value), &(sensorValues.rw1Set.currSpeed.value), &(sensorValues.rw2Set.currSpeed.value),
&(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes); &(sensorValues.rw3Set.currSpeed.value), &(sensorValues.rw4Set.currSpeed.value), mgtDpDes);
enableAntiStiction = acsParameters.inertialModeControllerParameters.enableAntiStiction;
break; break;
} }

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@ -841,10 +841,12 @@ class AcsParameters : public HasParametersIF {
uint8_t enableAntiStiction = true; uint8_t enableAntiStiction = true;
} pointingLawParameters; } pointingLawParameters;
struct IdleModeControllerParameters : PointingLawParameters {
} idleModeControllerParameters;
struct TargetModeControllerParameters : PointingLawParameters { struct TargetModeControllerParameters : PointingLawParameters {
double refDirection[3] = {-1, 0, 0}; // Antenna double refDirection[3] = {-1, 0, 0}; // Antenna
double refRotRate[3] = {0, 0, 0}; // Not used atm, do we want an option to double refRotRate[3] = {0, 0, 0};
// give this as an input- currently en calculation is done
double quatRef[4] = {0, 0, 0, 1}; double quatRef[4] = {0, 0, 0, 1};
int8_t timeElapsedMax = 10; // rot rate calculations int8_t timeElapsedMax = 10; // rot rate calculations
@ -860,6 +862,16 @@ class AcsParameters : public HasParametersIF {
double blindRotRate = 1 * M_PI / 180; double blindRotRate = 1 * M_PI / 180;
} targetModeControllerParameters; } targetModeControllerParameters;
struct GsTargetModeControllerParameters : PointingLawParameters {
double refDirection[3] = {-1, 0, 0}; // Antenna
int8_t timeElapsedMax = 10; // rot rate calculations
// Default is Stuttgart GS
double latitudeTgt = 48.7495 * M_PI / 180.; // [rad] Latitude
double longitudeTgt = 9.10384 * M_PI / 180.; // [rad] Longitude
double altitudeTgt = 500; // [m]
} gsTargetModeControllerParameters;
struct NadirModeControllerParameters : PointingLawParameters { struct NadirModeControllerParameters : PointingLawParameters {
double refDirection[3] = {-1, 0, 0}; // Antenna double refDirection[3] = {-1, 0, 0}; // Antenna
double quatRef[4] = {0, 0, 0, 1}; double quatRef[4] = {0, 0, 0, 1};

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@ -17,12 +17,12 @@ Guidance::Guidance(AcsParameters *acsParameters_) : acsParameters(*acsParameters
Guidance::~Guidance() {} Guidance::~Guidance() {}
void Guidance::targetQuatPtgSingleAxis(timeval now, double posSatE[3], double targetQuat[4], void Guidance::targetQuatPtgSingleAxis(timeval now, double posSatE[3], double targetQuat[4],
double refSatRate[3]) { double targetSatRotRate[3]) {
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// Calculation of target quaternion to groundstation or given latitude, longitude and altitude // Calculation of target quaternion to groundstation or given latitude, longitude and altitude
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// Transform longitude, latitude and altitude to cartesian coordiantes (earth // transform longitude, latitude and altitude to cartesian coordiantes (earth
// fixed/centered frame) // fixed/centered frame)
double targetCart[3] = {0, 0, 0}; double targetCart[3] = {0, 0, 0};
MathOperations<double>::cartesianFromLatLongAlt( MathOperations<double>::cartesianFromLatLongAlt(
@ -30,19 +30,19 @@ void Guidance::targetQuatPtgSingleAxis(timeval now, double posSatE[3], double ta
acsParameters.targetModeControllerParameters.longitudeTgt, acsParameters.targetModeControllerParameters.longitudeTgt,
acsParameters.targetModeControllerParameters.altitudeTgt, targetCart); acsParameters.targetModeControllerParameters.altitudeTgt, targetCart);
// Target direction in the ECEF frame // target direction in the ECEF frame
double targetDirE[3] = {0, 0, 0}; double targetDirE[3] = {0, 0, 0};
VectorOperations<double>::subtract(targetCart, posSatE, targetDirE, 3); VectorOperations<double>::subtract(targetCart, posSatE, targetDirE, 3);
// Transformation between ECEF and ECI frame // transformation between ECEF and ECI frame
double dcmEJ[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmEI[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmJE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmIE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmEJDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmEIDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::ecfToEciWithNutPre(now, *dcmEJ, *dcmEJDot); MathOperations<double>::ecfToEciWithNutPre(now, *dcmEI, *dcmEIDot);
MathOperations<double>::inverseMatrixDimThree(*dcmEJ, *dcmJE); MathOperations<double>::inverseMatrixDimThree(*dcmEI, *dcmIE);
double dcmJEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmIEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::inverseMatrixDimThree(*dcmEJDot, *dcmJEDot); MathOperations<double>::inverseMatrixDimThree(*dcmEIDot, *dcmIEDot);
// Transformation between ECEF and Body frame // Transformation between ECEF and Body frame
// double dcmBJ[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; // double dcmBJ[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
@ -52,20 +52,16 @@ void Guidance::targetQuatPtgSingleAxis(timeval now, double posSatE[3], double ta
// QuaternionOperations::toDcm(quatBJ, dcmBJ); // QuaternionOperations::toDcm(quatBJ, dcmBJ);
// MatrixOperations<double>::multiply(*dcmBJ, *dcmJE, *dcmBE, 3, 3, 3); // MatrixOperations<double>::multiply(*dcmBJ, *dcmJE, *dcmBE, 3, 3, 3);
// Target Direction in the body frame // target Direction in the body frame
double targetDirB[3] = {0, 0, 0}; double targetDirB[3] = {0, 0, 0};
MatrixOperations<double>::multiply(*dcmBE, targetDirE, targetDirB, 3, 3, 1); MatrixOperations<double>::multiply(*dcmBE, targetDirE, targetDirB, 3, 3, 1);
// rotation quaternion from two vectors // rotation quaternion from two vectors
double refDir[3] = {0, 0, 0}; double refDirB[3] = {0, 0, 0};
refDir[0] = acsParameters.targetModeControllerParameters.refDirection[0]; std::memcpy(refDirB, acsParameters.targetModeControllerParameters.refDirection,
refDir[1] = acsParameters.targetModeControllerParameters.refDirection[1]; 3 * sizeof(double));
refDir[2] = acsParameters.targetModeControllerParameters.refDirection[2];
double noramlizedTargetDirB[3] = {0, 0, 0};
VectorOperations<double>::normalize(targetDirB, noramlizedTargetDirB, 3);
VectorOperations<double>::normalize(refDir, refDir, 3);
double normTargetDirB = VectorOperations<double>::norm(noramlizedTargetDirB, 3); double normTargetDirB = VectorOperations<double>::norm(noramlizedTargetDirB, 3);
double normRefDir = VectorOperations<double>::norm(refDir, 3); double normRefDirB = VectorOperations<double>::norm(refDir, 3);
double crossDir[3] = {0, 0, 0}; double crossDir[3] = {0, 0, 0};
double dotDirections = VectorOperations<double>::dot(noramlizedTargetDirB, refDir); double dotDirections = VectorOperations<double>::dot(noramlizedTargetDirB, refDir);
VectorOperations<double>::cross(noramlizedTargetDirB, refDir, crossDir); VectorOperations<double>::cross(noramlizedTargetDirB, refDir, crossDir);
@ -152,7 +148,7 @@ void Guidance::targetQuatPtgThreeAxes(timeval now, double posSatE[3], double vel
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// Calculation of target quaternion for target pointing // Calculation of target quaternion for target pointing
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// transform longitude, latitude and altitude to cartesian coordiantes (ECEF) // transform longitude, latitude and altitude to cartesian coordiantes (ECEF)
double targetE[3] = {0, 0, 0}; double targetE[3] = {0, 0, 0};
MathOperations<double>::cartesianFromLatLongAlt( MathOperations<double>::cartesianFromLatLongAlt(
acsParameters.targetModeControllerParameters.latitudeTgt, acsParameters.targetModeControllerParameters.latitudeTgt,
@ -161,7 +157,7 @@ void Guidance::targetQuatPtgThreeAxes(timeval now, double posSatE[3], double vel
double targetDirE[3] = {0, 0, 0}; double targetDirE[3] = {0, 0, 0};
VectorOperations<double>::subtract(targetE, posSatE, targetDirE, 3); VectorOperations<double>::subtract(targetE, posSatE, targetDirE, 3);
// transformation between ECEF and ECI frame // transformation between ECEF and ECI frame
double dcmEI[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmEI[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmIE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmIE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmEIDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmEIDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
@ -171,7 +167,7 @@ void Guidance::targetQuatPtgThreeAxes(timeval now, double posSatE[3], double vel
double dcmIEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmIEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::inverseMatrixDimThree(*dcmEIDot, *dcmIEDot); MathOperations<double>::inverseMatrixDimThree(*dcmEIDot, *dcmIEDot);
// target direction and position vector in the inertial frame // target direction and position vector in the inertial frame
double targetDirI[3] = {0, 0, 0}, posSatI[3] = {0, 0, 0}; double targetDirI[3] = {0, 0, 0}, posSatI[3] = {0, 0, 0};
MatrixOperations<double>::multiply(*dcmIE, targetDirE, targetDirI, 3, 3, 1); MatrixOperations<double>::multiply(*dcmIE, targetDirE, targetDirI, 3, 3, 1);
MatrixOperations<double>::multiply(*dcmIE, posSatE, posSatI, 3, 3, 1); MatrixOperations<double>::multiply(*dcmIE, posSatE, posSatI, 3, 3, 1);
@ -213,133 +209,96 @@ void Guidance::targetQuatPtgThreeAxes(timeval now, double posSatE[3], double vel
targetRotationRate(timeElapsedMax, now, quatIX, targetSatRotRate); targetRotationRate(timeElapsedMax, now, quatIX, targetSatRotRate);
} }
void Guidance::targetQuatPtgGs(timeval now, double targetQuat[4], double refSatRate[3]) { void Guidance::targetQuatPtgGs(timeval now, double posSatE[3], double sunDirI[3], double quatIX[4],
double targetSatRotRate[3]) {
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// Calculation of target quaternion for ground station pointing // Calculation of target quaternion for ground station pointing
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// Transform longitude, latitude and altitude to cartesian coordiantes (earth // transform longitude, latitude and altitude to cartesian coordiantes (ECEF)
// fixed/centered frame) double groundStationE[3] = {0, 0, 0};
double groundStationCart[3] = {0, 0, 0};
MathOperations<double>::cartesianFromLatLongAlt( MathOperations<double>::cartesianFromLatLongAlt(
acsParameters.targetModeControllerParameters.latitudeTgt, acsParameters.gsTargetModeControllerParameters.latitudeTgt,
acsParameters.targetModeControllerParameters.longitudeTgt, acsParameters.gsTargetModeControllerParameters.longitudeTgt,
acsParameters.targetModeControllerParameters.altitudeTgt, groundStationCart); acsParameters.gsTargetModeControllerParameters.altitudeTgt, groundStationE);
double targetDirE[3] = {0, 0, 0}; double targetDirE[3] = {0, 0, 0};
VectorOperations<double>::subtract(groundStationCart, posSatE, targetDirE, 3); VectorOperations<double>::subtract(groundStationE, posSatE, targetDirE, 3);
// Transformation between ECEF and ECI frame // transformation between ECEF and ECI frame
double dcmEJ[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmEI[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmJE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmIE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmEJDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmEIDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::ecfToEciWithNutPre(now, *dcmEJ, *dcmEJDot); MathOperations<double>::ecfToEciWithNutPre(now, *dcmEI, *dcmEIDot);
MathOperations<double>::inverseMatrixDimThree(*dcmEJ, *dcmJE); MathOperations<double>::inverseMatrixDimThree(*dcmEI, *dcmIE);
double dcmJEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}; double dcmIEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::inverseMatrixDimThree(*dcmEJDot, *dcmJEDot); MathOperations<double>::inverseMatrixDimThree(*dcmEIDot, *dcmIEDot);
// Target Direction and position vector in the inertial frame // target direction and position vector in the inertial frame
double targetDirJ[3] = {0, 0, 0}, posSatJ[3] = {0, 0, 0}; double targetDirI[3] = {0, 0, 0}, posSatI[3] = {0, 0, 0};
MatrixOperations<double>::multiply(*dcmJE, targetDirE, targetDirJ, 3, 3, 1); MatrixOperations<double>::multiply(*dcmIE, targetDirE, targetDirI, 3, 3, 1);
MatrixOperations<double>::multiply(*dcmJE, posSatE, posSatJ, 3, 3, 1); MatrixOperations<double>::multiply(*dcmIE, posSatE, posSatI, 3, 3, 1);
// negative x-Axis aligned with target (Camera/E-band transmitter position) // negative x-axis aligned with target
// this aligns with the camera, E- and S-band antennas
double xAxis[3] = {0, 0, 0}; double xAxis[3] = {0, 0, 0};
VectorOperations<double>::normalize(targetDirJ, xAxis, 3); VectorOperations<double>::normalize(targetDirI, xAxis, 3);
VectorOperations<double>::mulScalar(xAxis, -1, xAxis, 3); VectorOperations<double>::mulScalar(xAxis, -1, xAxis, 3);
// get Sun Vector Model in ECI // get sun vector model in ECI
double sunJ[3]; VectorOperations<double>::normalize(sunDirI, sunDirI, 3);
std::memcpy(sunJ, susDataProcessed->sunIjkModel.value, 3 * sizeof(double));
VectorOperations<double>::normalize(sunJ, sunJ, 3);
// calculate z-axis as projection of sun vector into plane defined by x-axis as normal vector // calculate z-axis as projection of sun vector into plane defined by x-axis as normal vector
// z = sPerpenticular = s - sParallel = s - (x*s)/norm(x)^2 * x // z = sPerpenticular = s - sParallel = s - (x*s)/norm(x)^2 * x
double xDotS = VectorOperations<double>::dot(xAxis, sunJ); double xDotS = VectorOperations<double>::dot(xAxis, sunDirI);
xDotS /= pow(VectorOperations<double>::norm(xAxis, 3), 2); xDotS /= pow(VectorOperations<double>::norm(xAxis, 3), 2);
double sunParallel[3], zAxis[3]; double sunParallel[3], zAxis[3];
VectorOperations<double>::mulScalar(xAxis, xDotS, sunParallel, 3); VectorOperations<double>::mulScalar(xAxis, xDotS, sunParallel, 3);
VectorOperations<double>::subtract(sunJ, sunParallel, zAxis, 3); VectorOperations<double>::subtract(sunDirI, sunParallel, zAxis, 3);
VectorOperations<double>::normalize(zAxis, zAxis, 3); VectorOperations<double>::normalize(zAxis, zAxis, 3);
// calculate y-axis // y-axis completes RHS
double yAxis[3]; double yAxis[3];
VectorOperations<double>::cross(zAxis, xAxis, yAxis); VectorOperations<double>::cross(zAxis, xAxis, yAxis);
VectorOperations<double>::normalize(yAxis, yAxis, 3); VectorOperations<double>::normalize(yAxis, yAxis, 3);
// Complete transformation matrix // join transformation matrix
double dcmTgt[3][3] = {{xAxis[0], yAxis[0], zAxis[0]}, double dcmTgt[3][3] = {{xAxis[0], yAxis[0], zAxis[0]},
{xAxis[1], yAxis[1], zAxis[1]}, {xAxis[1], yAxis[1], zAxis[1]},
{xAxis[2], yAxis[2], zAxis[2]}}; {xAxis[2], yAxis[2], zAxis[2]}};
double quatInertialTarget[4] = {0, 0, 0, 0}; double quatInertialTarget[4] = {0, 0, 0, 0};
QuaternionOperations::fromDcm(dcmTgt, quatInertialTarget); QuaternionOperations::fromDcm(dcmTgt, quatInertialTarget);
int8_t timeElapsedMax = acsParameters.targetModeControllerParameters.timeElapsedMax; int8_t timeElapsedMax = acsParameters.gsTargetModeControllerParameters.timeElapsedMax;
refRotationRate(timeElapsedMax, now, quatInertialTarget, refSatRate); targetRotationRate(timeElapsedMax, now, quatInertialTarget, targetSatRotRate);
// Transform in system relative to satellite frame
double quatBJ[4] = {0, 0, 0, 0};
std::memcpy(quatBJ, mekfData->quatMekf.value, 4 * sizeof(double));
QuaternionOperations::multiply(quatBJ, quatInertialTarget, targetQuat);
} }
void Guidance::targetQuatPtgSun(timeval now, double targetQuat[4], double refSatRate[3]) { void Guidance::targetQuatPtgSun(double sunDirI[3], double targetQuat[4], double refSatRate[3]) {
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// Calculation of target quaternion to sun // Calculation of target quaternion to sun
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
double quatBJ[4] = {0, 0, 0, 0}; // positive z-Axis of EIVE in direction of sun
double dcmBJ[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
std::memcpy(quatBJ, mekfData->quatMekf.value, 4 * sizeof(double));
QuaternionOperations::toDcm(quatBJ, dcmBJ);
double sunDirJ[3] = {0, 0, 0}, sunDirB[3] = {0, 0, 0};
if (susDataProcessed->sunIjkModel.isValid()) {
std::memcpy(sunDirJ, susDataProcessed->sunIjkModel.value, 3 * sizeof(double));
MatrixOperations<double>::multiply(*dcmBJ, sunDirJ, sunDirB, 3, 3, 1);
} else if (susDataProcessed->susVecTot.isValid()) {
std::memcpy(sunDirB, susDataProcessed->susVecTot.value, 3 * sizeof(double));
} else {
return;
}
// Transformation between ECEF and ECI frame
double dcmEJ[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmJE[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
double dcmEJDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::ecfToEciWithNutPre(now, *dcmEJ, *dcmEJDot);
MathOperations<double>::inverseMatrixDimThree(*dcmEJ, *dcmJE);
double dcmJEDot[3][3] = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}};
MathOperations<double>::inverseMatrixDimThree(*dcmEJDot, *dcmJEDot);
// positive z-Axis of EIVE in direction of sun
double zAxis[3] = {0, 0, 0}; double zAxis[3] = {0, 0, 0};
VectorOperations<double>::normalize(sunDirB, zAxis, 3); VectorOperations<double>::normalize(sunDirI, zAxis, 3);
// Assign helper vector (north pole inertial) // assign helper vector (north pole inertial)
double helperVec[3] = {0, 0, 1}; double helperVec[3] = {0, 0, 1};
// Construct y-axis from helper vector and z-axis // construct y-axis from helper vector and z-axis
double yAxis[3] = {0, 0, 0}; double yAxis[3] = {0, 0, 0};
VectorOperations<double>::cross(zAxis, helperVec, yAxis); VectorOperations<double>::cross(zAxis, helperVec, yAxis);
VectorOperations<double>::normalize(yAxis, yAxis, 3); VectorOperations<double>::normalize(yAxis, yAxis, 3);
// Construct x-axis from y- and z-axes // construct x-axis from y- and z-axes
double xAxis[3] = {0, 0, 0}; double xAxis[3] = {0, 0, 0};
VectorOperations<double>::cross(yAxis, zAxis, xAxis); VectorOperations<double>::cross(yAxis, zAxis, xAxis);
VectorOperations<double>::normalize(xAxis, xAxis, 3); VectorOperations<double>::normalize(xAxis, xAxis, 3);
// Transformation matrix to Sun, no further transforamtions, reference is already // join transformation matrix
// the EIVE body frame
double dcmTgt[3][3] = {{xAxis[0], yAxis[0], zAxis[0]}, double dcmTgt[3][3] = {{xAxis[0], yAxis[0], zAxis[0]},
{xAxis[1], yAxis[1], zAxis[1]}, {xAxis[1], yAxis[1], zAxis[1]},
{xAxis[2], yAxis[2], zAxis[2]}}; {xAxis[2], yAxis[2], zAxis[2]}};
double quatSun[4] = {0, 0, 0, 0}; QuaternionOperations::fromDcm(dcmTgt, targetQuat);
QuaternionOperations::fromDcm(dcmTgt, quatSun);
targetQuat[0] = quatSun[0];
targetQuat[1] = quatSun[1];
targetQuat[2] = quatSun[2];
targetQuat[3] = quatSun[3];
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
// Calculation of reference rotation rate // Calculation of reference rotation rate
@ -501,6 +460,31 @@ void Guidance::comparePtg(double currentQuat[4], double currentSatRotRate[3], do
// under 150 arcsec ?? // under 150 arcsec ??
} }
void Guidance::comparePtg(double currentQuat[4], double currentSatRotRate[3], double targetQuat[4],
double targetSatRotRate[3], double errorQuat[4],
double errorSatRotRate[3], double errorAngle) {
// First calculate error quaternion between current and target orientation
QuaternionOperations::multiply(currentQuat, targetQuat, errorQuat);
// Keep scalar part of quaternion positive
if (errorQuat[3] < 0) {
VectorOperations<double>::mulScalar(errorQuat, -1, errorQuat, 4);
}
// Calculate error angle
errorAngle = QuaternionOperations::getAngle(errorQuat, true);
// Only give back error satellite rotational rate if orientation has already been aquired
if (errorAngle < 2. / 180. * M_PI) {
// Then substract the combined required satellite rotational rates from the actual rate
VectorOperations<double>::subtract(currentSatRotRate, targetSatRotRate, errorSatRotRate, 3);
} else {
// If orientation has not been aquired yet set satellite rotational rate to zero
errorSatRotRate = 0;
}
// target flag in matlab, importance, does look like it only gives feedback if pointing control is
// under 150 arcsec ??
}
void Guidance::targetRotationRate(int8_t timeElapsedMax, timeval now, double quatInertialTarget[4], void Guidance::targetRotationRate(int8_t timeElapsedMax, timeval now, double quatInertialTarget[4],
double *refSatRate) { double *refSatRate) {
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------

View File

@ -19,11 +19,12 @@ class Guidance {
void targetQuatPtgSingleAxis(timeval now, double targetQuat[4], double targetSatRotRate[3]); void targetQuatPtgSingleAxis(timeval now, double targetQuat[4], double targetSatRotRate[3]);
void targetQuatPtgThreeAxes(timeval now, double posSatE[3], double velSatE[3], double quatIX[4], void targetQuatPtgThreeAxes(timeval now, double posSatE[3], double velSatE[3], double quatIX[4],
double targetSatRotRate[3]); double targetSatRotRate[3]);
void targetQuatPtgGs(timeval now, double targetQuat[4], double targetSatRotRate[3]); void targetQuatPtgGs(timeval now, double posSatE[3], double sunDirI[3], double quatIX[4],
double targetSatRotRate[3]);
// Function to get the target quaternion and refence rotation rate for sun pointing after ground // Function to get the target quaternion and refence rotation rate for sun pointing after ground
// station // station
void targetQuatPtgSun(timeval now, double targetQuat[4], double targetSatRotRate[3]); void targetQuatPtgSun(double sunDirI[3], double targetQuat[4], double refSatRate[3]);
// Function to get the target quaternion and refence rotation rate from gps position for Nadir // Function to get the target quaternion and refence rotation rate from gps position for Nadir
// pointing // pointing
@ -41,6 +42,9 @@ class Guidance {
void comparePtg(double currentQuat[4], double currentSatRotRate[3], double targetQuat[4], void comparePtg(double currentQuat[4], double currentSatRotRate[3], double targetQuat[4],
double targetSatRotRate[3], double refQuat[4], double refSatRotRate[3], double targetSatRotRate[3], double refQuat[4], double refSatRotRate[3],
double errorQuat[4], double errorSatRotRate[3], double errorAngle); double errorQuat[4], double errorSatRotRate[3], double errorAngle);
void comparePtg(double currentQuat[4], double currentSatRotRate[3], double targetQuat[4],
double targetSatRotRate[3], double errorQuat[4], double errorSatRotRate[3],
double errorAngle);
void targetRotationRate(int8_t timeElapsedMax, timeval now, double quatInertialTarget[4], void targetRotationRate(int8_t timeElapsedMax, timeval now, double quatInertialTarget[4],
double *targetSatRotRate); double *targetSatRotRate);

View File

@ -1,10 +1,3 @@
/*
* SensorProcessing.cpp
*
* Created on: 7 Mar 2022
* Author: Robin Marquardt
*/
#include "SensorProcessing.h" #include "SensorProcessing.h"
#include <fsfw/datapool/PoolReadGuard.h> #include <fsfw/datapool/PoolReadGuard.h>