diff options
Diffstat (limited to 'src/lib/launchdetection')
-rw-r--r-- | src/lib/launchdetection/CatapultLaunchMethod.cpp | 70 | ||||
-rw-r--r-- | src/lib/launchdetection/CatapultLaunchMethod.h | 15 | ||||
-rw-r--r-- | src/lib/launchdetection/LaunchDetector.cpp | 47 | ||||
-rw-r--r-- | src/lib/launchdetection/LaunchDetector.h | 11 | ||||
-rw-r--r-- | src/lib/launchdetection/LaunchMethod.h | 16 | ||||
-rw-r--r-- | src/lib/launchdetection/launchdetection_params.c | 25 |
6 files changed, 154 insertions, 30 deletions
diff --git a/src/lib/launchdetection/CatapultLaunchMethod.cpp b/src/lib/launchdetection/CatapultLaunchMethod.cpp index c555a0a69..2ea1c414b 100644 --- a/src/lib/launchdetection/CatapultLaunchMethod.cpp +++ b/src/lib/launchdetection/CatapultLaunchMethod.cpp @@ -49,9 +49,11 @@ CatapultLaunchMethod::CatapultLaunchMethod(SuperBlock *parent) : SuperBlock(parent, "CAT"), last_timestamp(hrt_absolute_time()), integrator(0.0f), - launchDetected(false), - threshold_accel(this, "A"), - threshold_time(this, "T") + state(LAUNCHDETECTION_RES_NONE), + thresholdAccel(this, "A"), + thresholdTime(this, "T"), + motorDelay(this, "MDEL"), + pitchMaxPreThrottle(this, "PMAX") { } @@ -65,34 +67,66 @@ void CatapultLaunchMethod::update(float accel_x) float dt = (float)hrt_elapsed_time(&last_timestamp) * 1e-6f; last_timestamp = hrt_absolute_time(); - if (accel_x > threshold_accel.get()) { - integrator += accel_x * dt; -// warnx("*** integrator %.3f, threshold_accel %.3f, threshold_time %.3f, accel_x %.3f, dt %.3f", -// (double)integrator, (double)threshold_accel.get(), (double)threshold_time.get(), (double)accel_x, (double)dt); - if (integrator > threshold_accel.get() * threshold_time.get()) { - launchDetected = true; + switch (state) { + case LAUNCHDETECTION_RES_NONE: + /* Detect a acceleration that is longer and stronger as the minimum given by the params */ + if (accel_x > thresholdAccel.get()) { + integrator += dt; + if (integrator > thresholdTime.get()) { + if (motorDelay.get() > 0.0f) { + state = LAUNCHDETECTION_RES_DETECTED_ENABLECONTROL; + warnx("Launch detected: state: enablecontrol, waiting %.2fs until using full" + " throttle", (double)motorDelay.get()); + } else { + /* No motor delay set: go directly to enablemotors state */ + state = LAUNCHDETECTION_RES_DETECTED_ENABLEMOTORS; + warnx("Launch detected: state: enablemotors (delay not activated)"); + } + } + } else { + /* reset */ + reset(); } + break; + + case LAUNCHDETECTION_RES_DETECTED_ENABLECONTROL: + /* Vehicle is currently controlling attitude but not with full throttle. Waiting undtil delay is + * over to allow full throttle */ + motorDelayCounter += dt; + if (motorDelayCounter > motorDelay.get()) { + warnx("Launch detected: state enablemotors"); + state = LAUNCHDETECTION_RES_DETECTED_ENABLEMOTORS; + } + break; + + default: + break; - } else { -// warnx("integrator %.3f, threshold_accel %.3f, threshold_time %.3f, accel_x %.3f, dt %.3f", -// (double)integrator, (double)threshold_accel.get(), (double)threshold_time.get(), (double)accel_x, (double)dt); - /* reset integrator */ - integrator = 0.0f; - launchDetected = false; } } -bool CatapultLaunchMethod::getLaunchDetected() +LaunchDetectionResult CatapultLaunchMethod::getLaunchDetected() const { - return launchDetected; + return state; } void CatapultLaunchMethod::reset() { integrator = 0.0f; - launchDetected = false; + motorDelayCounter = 0.0f; + state = LAUNCHDETECTION_RES_NONE; +} + +float CatapultLaunchMethod::getPitchMax(float pitchMaxDefault) { + /* If motor is turned on do not impose the extra limit on maximum pitch */ + if (state == LAUNCHDETECTION_RES_DETECTED_ENABLEMOTORS) { + return pitchMaxDefault; + } else { + return pitchMaxPreThrottle.get(); + } + } } diff --git a/src/lib/launchdetection/CatapultLaunchMethod.h b/src/lib/launchdetection/CatapultLaunchMethod.h index 23757f6f3..321dfb1de 100644 --- a/src/lib/launchdetection/CatapultLaunchMethod.h +++ b/src/lib/launchdetection/CatapultLaunchMethod.h @@ -57,16 +57,23 @@ public: ~CatapultLaunchMethod(); void update(float accel_x); - bool getLaunchDetected(); + LaunchDetectionResult getLaunchDetected() const; void reset(); + float getPitchMax(float pitchMaxDefault); private: hrt_abstime last_timestamp; float integrator; - bool launchDetected; + float motorDelayCounter; - control::BlockParamFloat threshold_accel; - control::BlockParamFloat threshold_time; + LaunchDetectionResult state; + + control::BlockParamFloat thresholdAccel; + control::BlockParamFloat thresholdTime; + control::BlockParamFloat motorDelay; + control::BlockParamFloat pitchMaxPreThrottle; /**< Upper pitch limit before throttle is turned on. + Can be used to make sure that the AC does not climb + too much while attached to a bungee */ }; diff --git a/src/lib/launchdetection/LaunchDetector.cpp b/src/lib/launchdetection/LaunchDetector.cpp index 3bf47bbb0..52f5c3257 100644 --- a/src/lib/launchdetection/LaunchDetector.cpp +++ b/src/lib/launchdetection/LaunchDetector.cpp @@ -46,6 +46,7 @@ namespace launchdetection LaunchDetector::LaunchDetector() : SuperBlock(NULL, "LAUN"), + activeLaunchDetectionMethodIndex(-1), launchdetection_on(this, "ALL_ON"), throttlePreTakeoff(this, "THR_PRE") { @@ -65,7 +66,14 @@ LaunchDetector::~LaunchDetector() void LaunchDetector::reset() { /* Reset all detectors */ - launchMethods[0]->reset(); + for (uint8_t i = 0; i < sizeof(launchMethods)/sizeof(LaunchMethod); i++) { + launchMethods[i]->reset(); + } + + /* Reset active launchdetector */ + activeLaunchDetectionMethodIndex = -1; + + } void LaunchDetector::update(float accel_x) @@ -77,17 +85,44 @@ void LaunchDetector::update(float accel_x) } } -bool LaunchDetector::getLaunchDetected() +LaunchDetectionResult LaunchDetector::getLaunchDetected() { if (launchdetection_on.get() == 1) { - for (uint8_t i = 0; i < sizeof(launchMethods)/sizeof(LaunchMethod); i++) { - if(launchMethods[i]->getLaunchDetected()) { - return true; + if (activeLaunchDetectionMethodIndex < 0) { + /* None of the active launchmethods has detected a launch, check all launchmethods */ + for (uint8_t i = 0; i < sizeof(launchMethods)/sizeof(LaunchMethod); i++) { + if(launchMethods[i]->getLaunchDetected() != LAUNCHDETECTION_RES_NONE) { + warnx("selecting launchmethod %d", i); + activeLaunchDetectionMethodIndex = i; // from now on only check this method + return launchMethods[i]->getLaunchDetected(); + } } + } else { + return launchMethods[activeLaunchDetectionMethodIndex]->getLaunchDetected(); } } - return false; + return LAUNCHDETECTION_RES_NONE; } +float LaunchDetector::getPitchMax(float pitchMaxDefault) { + if (!launchdetection_on.get()) { + return pitchMaxDefault; + } + + /* if a lauchdetectionmethod is active or only one exists return the pitch limit from this method, + * otherwise use the default limit */ + if (activeLaunchDetectionMethodIndex < 0) { + if (sizeof(launchMethods)/sizeof(LaunchMethod) > 1) { + return pitchMaxDefault; + } else { + return launchMethods[0]->getPitchMax(pitchMaxDefault); + } + } else { + return launchMethods[activeLaunchDetectionMethodIndex]->getPitchMax(pitchMaxDefault); + } + +} + + } diff --git a/src/lib/launchdetection/LaunchDetector.h b/src/lib/launchdetection/LaunchDetector.h index 1a214b66e..4215b49d2 100644 --- a/src/lib/launchdetection/LaunchDetector.h +++ b/src/lib/launchdetection/LaunchDetector.h @@ -59,14 +59,23 @@ public: void reset(); void update(float accel_x); - bool getLaunchDetected(); + LaunchDetectionResult getLaunchDetected(); bool launchDetectionEnabled() { return (bool)launchdetection_on.get(); }; float getThrottlePreTakeoff() {return throttlePreTakeoff.get(); } + /* Returns a maximum pitch in deg. Different launch methods may impose upper pitch limits during launch */ + float getPitchMax(float pitchMaxDefault); + // virtual bool getLaunchDetected(); protected: private: + int activeLaunchDetectionMethodIndex; /**< holds a index to the launchMethod in the array launchMethods + which detected a Launch. If no launchMethod has detected a launch yet the + value is -1. Once one launchMetthod has detected a launch only this + method is checked for further adavancing in the state machine (e.g. when + to power up the motors) */ + LaunchMethod* launchMethods[1]; control::BlockParamInt launchdetection_on; control::BlockParamFloat throttlePreTakeoff; diff --git a/src/lib/launchdetection/LaunchMethod.h b/src/lib/launchdetection/LaunchMethod.h index e04467f6a..8b5220cb3 100644 --- a/src/lib/launchdetection/LaunchMethod.h +++ b/src/lib/launchdetection/LaunchMethod.h @@ -44,13 +44,27 @@ namespace launchdetection { +enum LaunchDetectionResult { + LAUNCHDETECTION_RES_NONE = 0, /**< No launch has been detected */ + LAUNCHDETECTION_RES_DETECTED_ENABLECONTROL = 1, /**< Launch has been detected, the controller should + control the attitude. However any motors should not throttle + up and still be set to 'throttlePreTakeoff'. + For instance this is used to have a delay for the motor + when launching a fixed wing aircraft from a bungee */ + LAUNCHDETECTION_RES_DETECTED_ENABLEMOTORS = 2 /**< Launch has been detected, teh controller should control + attitude and also throttle up the motors. */ +}; + class LaunchMethod { public: virtual void update(float accel_x) = 0; - virtual bool getLaunchDetected() = 0; + virtual LaunchDetectionResult getLaunchDetected() const = 0; virtual void reset() = 0; + /* Returns a upper pitch limit if required, otherwise returns pitchMaxDefault */ + virtual float getPitchMax(float pitchMaxDefault) = 0; + protected: private: }; diff --git a/src/lib/launchdetection/launchdetection_params.c b/src/lib/launchdetection/launchdetection_params.c index 8df8c696c..e3aa7ab2d 100644 --- a/src/lib/launchdetection/launchdetection_params.c +++ b/src/lib/launchdetection/launchdetection_params.c @@ -78,6 +78,31 @@ PARAM_DEFINE_FLOAT(LAUN_CAT_A, 30.0f); PARAM_DEFINE_FLOAT(LAUN_CAT_T, 0.05f); /** + * Motor delay + * + * Delay between starting attitude control and powering up the throttle (giving throttle control to the controller) + * Before this timespan is up the throttle will be set to LAUN_THR_PRE, set to 0 to deactivate + * + * @unit seconds + * @min 0 + * @group Launch detection + */ +PARAM_DEFINE_FLOAT(LAUN_CAT_MDEL, 0.0f); + +/** + * Maximum pitch before the throttle is powered up (during motor delay phase) + * + * This is an extra limit for the maximum pitch which is imposed in the phase before the throttle turns on. + * This allows to limit the maximum pitch angle during a bungee launch (make the launch less steep). + * + * @unit deg + * @min 0 + * @max 45 + * @group Launch detection + */ +PARAM_DEFINE_FLOAT(LAUN_CAT_PMAX, 30.0f); + +/** * Throttle setting while detecting launch. * * The throttle is set to this value while the system is waiting for the take-off. |