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Code Issues Releases Activity

Add friendly settings for the vbar mode including the VbarTau which acts like

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the time constant.
This commit is contained in:
James Cotton 2012-02-20 20:47:54 -06:00
parent ff1b1a93cf
commit fe978504bc
3 changed files with 48 additions and 32 deletions
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6
flight/Modules/ManualControl/manualcontrol.c
View File

@ -586,7 +586,7 @@ static void updateStabilizationDesired(ManualControlCommandData * cmd, ManualCon
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_WEAKLEVELING) ? cmd->Roll * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_ROLL] :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE) ? cmd->Roll * stabSettings.RollMax :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_AXISLOCK) ? cmd->Roll * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_ROLL] :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR) ? cmd->Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR) ? cmd->Roll * stabSettings.VbarSensitivity[STABILIZATIONSETTINGS_VBARSENSITIVITY_ROLL] :
0; // this is an invalid mode
;
stabilization.Pitch = (stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_NONE) ? cmd->Pitch :
@ -594,7 +594,7 @@ static void updateStabilizationDesired(ManualControlCommandData * cmd, ManualCon
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_WEAKLEVELING) ? cmd->Pitch * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_PITCH] :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE) ? cmd->Pitch * stabSettings.PitchMax :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_AXISLOCK) ? cmd->Pitch * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_PITCH] :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR) ? cmd->Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR) ? cmd->Pitch * stabSettings.VbarSensitivity[STABILIZATIONSETTINGS_VBARSENSITIVITY_PITCH] :
0; // this is an invalid mode
stabilization.Yaw = (stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_NONE) ? cmd->Yaw :
@ -602,7 +602,7 @@ static void updateStabilizationDesired(ManualControlCommandData * cmd, ManualCon
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_WEAKLEVELING) ? cmd->Yaw * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_YAW] :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE) ? cmd->Yaw * stabSettings.YawMax :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_AXISLOCK) ? cmd->Yaw * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_YAW] :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR) ? cmd->Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR) ? cmd->Yaw * stabSettings.VbarSensitivity[STABILIZATIONSETTINGS_VBARSENSITIVITY_YAW] :
0; // this is an invalid mode
stabilization.Throttle = (cmd->Throttle < 0) ? -1 : cmd->Throttle;

68
flight/Modules/Stabilization/stabilization.c
View File

@ -55,7 +55,7 @@
#define TASK_PRIORITY (tskIDLE_PRIORITY+4)
#define FAILSAFE_TIMEOUT_MS 30
enum {PID_RATE_ROLL, PID_RATE_PITCH, PID_RATE_YAW, PID_ROLL, PID_PITCH, PID_YAW, PID_MAX};
enum {PID_RATE_ROLL, PID_RATE_PITCH, PID_RATE_YAW, PID_ROLL, PID_PITCH, PID_YAW, PID_VBAR_ROLL, PID_VBAR_PITCH, PID_VBAR_YAW, PID_MAX};
enum {ROLL,PITCH,YAW,MAX_AXES};
@ -83,7 +83,7 @@ float weak_leveling_kp = 0;
uint8_t weak_leveling_max = 0;
bool lowThrottleZeroIntegral;
float vbar_integral[3] = {0, 0, 0};
float vbar_decay = 0.1f;
float vbar_decay = 0.991f;
pid_type pids[PID_MAX];
// Private functions
@ -312,14 +312,10 @@ static void stabilizationTask(void* parameters)
case STABILIZATIONDESIRED_STABILIZATIONMODE_VBAR:
{
// Track the angle of the virtual flybar which includes a slow decay
vbar_decay = 0.991f; // expf(logf(0.01) / (1 / dT)) // Set the decay so that after 1 second at 1%
vbar_integral[i] = vbar_integral[i] * vbar_decay + gyro_filtered[i] * dT;
float k1 = 0.2f;
float k2 = pids[PID_RATE_ROLL + i].i;
float k3 = pids[PID_RATE_ROLL + i].p;
// Command signal is composed of stick input added to the gyro and virtual flybar
float command = rateDesiredAxis[i] * k1 - vbar_integral[i] * k2 - gyro_filtered[i] * k3;
float command = rateDesiredAxis[i] - vbar_integral[i] * pids[PID_VBAR_ROLL + i].i - gyro_filtered[i] * pids[PID_VBAR_ROLL + i].p;
actuatorDesiredAxis[i] = bound(command);
break;
@ -418,44 +414,55 @@ static float bound(float val)
return val;
}
static void SettingsUpdatedCb(UAVObjEvent * ev)
{
memset(pids,0,sizeof (pid_type) * PID_MAX);
StabilizationSettingsGet(&settings);
// Set the roll rate PID constants
pids[0].p = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KP];
pids[0].i = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KI];
pids[0].d = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KD];
pids[0].iLim = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_ILIMIT];
pids[PID_RATE_ROLL].p = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KP];
pids[PID_RATE_ROLL].i = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KI];
pids[PID_RATE_ROLL].d = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KD];
pids[PID_RATE_ROLL].iLim = settings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_ILIMIT];
// Set the pitch rate PID constants
pids[1].p = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_KP];
pids[1].i = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_KI];
pids[1].d = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_KD];
pids[1].iLim = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_ILIMIT];
pids[PID_RATE_PITCH].p = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_KP];
pids[PID_RATE_PITCH].i = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_KI];
pids[PID_RATE_PITCH].d = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_KD];
pids[PID_RATE_PITCH].iLim = settings.PitchRatePID[STABILIZATIONSETTINGS_PITCHRATEPID_ILIMIT];
// Set the yaw rate PID constants
pids[2].p = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_KP];
pids[2].i = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_KI];
pids[2].d = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_KD];
pids[2].iLim = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_ILIMIT];
pids[PID_RATE_YAW].p = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_KP];
pids[PID_RATE_YAW].i = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_KI];
pids[PID_RATE_YAW].d = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_KD];
pids[PID_RATE_YAW].iLim = settings.YawRatePID[STABILIZATIONSETTINGS_YAWRATEPID_ILIMIT];
// Set the roll attitude PI constants
pids[3].p = settings.RollPI[STABILIZATIONSETTINGS_ROLLPI_KP];
pids[3].i = settings.RollPI[STABILIZATIONSETTINGS_ROLLPI_KI];
pids[3].iLim = settings.RollPI[STABILIZATIONSETTINGS_ROLLPI_ILIMIT];
pids[PID_ROLL].p = settings.RollPI[STABILIZATIONSETTINGS_ROLLPI_KP];
pids[PID_ROLL].i = settings.RollPI[STABILIZATIONSETTINGS_ROLLPI_KI];
pids[PID_ROLL].iLim = settings.RollPI[STABILIZATIONSETTINGS_ROLLPI_ILIMIT];
// Set the pitch attitude PI constants
pids[4].p = settings.PitchPI[STABILIZATIONSETTINGS_PITCHPI_KP];
pids[4].i = settings.PitchPI[STABILIZATIONSETTINGS_PITCHPI_KI];
pids[4].iLim = settings.PitchPI[STABILIZATIONSETTINGS_PITCHPI_ILIMIT];
pids[PID_PITCH].p = settings.PitchPI[STABILIZATIONSETTINGS_PITCHPI_KP];
pids[PID_PITCH].i = settings.PitchPI[STABILIZATIONSETTINGS_PITCHPI_KI];
pids[PID_PITCH].iLim = settings.PitchPI[STABILIZATIONSETTINGS_PITCHPI_ILIMIT];
// Set the yaw attitude PI constants
pids[5].p = settings.YawPI[STABILIZATIONSETTINGS_YAWPI_KP];
pids[5].i = settings.YawPI[STABILIZATIONSETTINGS_YAWPI_KI];
pids[5].iLim = settings.YawPI[STABILIZATIONSETTINGS_YAWPI_ILIMIT];
pids[PID_YAW].p = settings.YawPI[STABILIZATIONSETTINGS_YAWPI_KP];
pids[PID_YAW].i = settings.YawPI[STABILIZATIONSETTINGS_YAWPI_KI];
pids[PID_YAW].iLim = settings.YawPI[STABILIZATIONSETTINGS_YAWPI_ILIMIT];
// Set the roll attitude PI constants
pids[PID_VBAR_ROLL].p = settings.VbarRollPI[STABILIZATIONSETTINGS_VBARROLLPI_KP];
pids[PID_VBAR_ROLL].i = settings.VbarRollPI[STABILIZATIONSETTINGS_VBARROLLPI_KI];
// Set the pitch attitude PI constants
pids[PID_VBAR_PITCH].p = settings.VbarPitchPI[STABILIZATIONSETTINGS_VBARPITCHPI_KP];
pids[PID_VBAR_PITCH].i = settings.VbarPitchPI[STABILIZATIONSETTINGS_VBARPITCHPI_KI];
// Set the yaw attitude PI constants
pids[PID_VBAR_YAW].p = settings.VbarYawPI[STABILIZATIONSETTINGS_VBARYAWPI_KP];
pids[PID_VBAR_YAW].i = settings.VbarYawPI[STABILIZATIONSETTINGS_VBARYAWPI_KI];
// Maximum deviation to accumulate for axis lock
max_axis_lock = settings.MaxAxisLock;
@ -478,6 +485,9 @@ static void SettingsUpdatedCb(UAVObjEvent * ev)
gyro_alpha = 0; // not trusting this to resolve to 0
else
gyro_alpha = expf(-fakeDt / settings.GyroTau);
// Compute time constant for vbar decay term based on a tau
vbar_decay = expf(-fakeDt / settings.VbarTau);
}

6
shared/uavobjectdefinition/stabilizationsettings.xml
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@ -14,6 +14,12 @@
<field name="PitchPI" units="" type="float" elementnames="Kp,Ki,ILimit" defaultvalue="2,0,50" limits="%BE:0:10,%BE:0:10,"/>
<field name="YawPI" units="" type="float" elementnames="Kp,Ki,ILimit" defaultvalue="2,0,50" limits="%BE:0:10,%BE:0:10,"/>
<field name="VbarSensitivity" units="frac" type="float" elementnames="Roll,Pitch,Yaw" defaultvalue="0.5,0.5,0.5"/>
<field name="VbarRollPI" units="frac" type="float" elementnames="Kp,Ki" defaultvalue="0.005,0.002"/>
<field name="VbarPitchPI" units="frac" type="float" elementnames="Kp,Ki" defaultvalue="0.005,0.002"/>
<field name="VbarYawPI" units="frac" type="float" elementnames="Kp,Ki" defaultvalue="0.005,0.002"/>
<field name="VbarTau" units="sec" type="float" elements="1" defaultvalue="0.5"/>
<field name="GyroTau" units="" type="float" elements="1" defaultvalue="0.005"/>
<field name="MaxAxisLock" units="deg" type="uint8" elements="1" defaultvalue="15"/>