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Added pitot tube icing detection (#23206)

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* lib: add FilteredDerivative class

* AirspeedValidator: add first principle check

- filters throttle, pitch and airspeed rate, and triggers
if the airspeed rate is negative even though the vehicle
is pitching down and giving high throttle.
Check has to fail for duration defined by ASPD_FP_T_WINDOW
to trigger an airspeed failure.

* AirspeedValidator: define constants for first principle check

* FilteredDerivative: set initialised to false if sample interval is invalid

* airspeed_selector: improved comment

* increase IAS derivative filter time constant from 4 to 5

* use legacy parameter handling for FW_PSP_OFF

* handle FW_THR_MAX as well

* ROMFS/airframes: exclude some airframes for v6x and v4pro to save flash on them

---------

Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Signed-off-by: RomanBapst <bapstroman@gmail.com>
Co-authored-by: Silvan Fuhrer <silvan@auterion.com>
This commit is contained in:
Roman Bapst
2024-07-09 11:16:40 +02:00
committed by GitHub
co-authored by Silvan Fuhrer
parent a35cecece4
commit 8221940b60
11 changed files with 278 additions and 5 deletions
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msg/AirspeedValidated.msg
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@@ -10,3 +10,7 @@ float32 true_ground_minus_wind_m_s # TAS calculated from groundspeed - windspe
bool airspeed_sensor_measurement_valid # True if data from at least one airspeed sensor is declared valid.
int8 selected_airspeed_index # 1-3: airspeed sensor index, 0: groundspeed-windspeed, -1: airspeed invalid
float32 airspeed_derivative_filtered # filtered indicated airspeed derivative [m/s/s]
float32 throttle_filtered # filtered fixed-wing throttle [-]
float32 pitch_filtered # filtered pitch [rad]