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add_library(ecl_EKF
airspeed_fusion.cpp
control.cpp
[ekf] controlMagFusion refactor and mag field strength check (#662) * ekf_control: Inhibit mag fusion when field magnitude is large Move mag inhibition check in separate function * ekf_control: pull out of functionalities out of controlMagFusion - yaw abd mag bias observability checks - mag 3D conditions - load mag covariances - set and clear mag control modes * ekf_control: refactor mag heading/3D start/stop. Move mag declination, mag 3d and mag heading fusion out of the main function * ekf_control: extract mag yaw reset and mag declination fusion requirements * ekf_control: use WMM in isStronMagneticField for mag fusion inhibition - Correct units of WMM strength table * ekf_control: extract mag_state_only functionality of AUTOFW (VTOL custom) Also split inAirYawReset from onGroundYawReset * ekf_control: extract mag automatic selection - transform if-else into switch-case for parameter fusion type selection * ekf_control: extract run3DMagAndDeclFusion, reorganize functions, fix flag naming in Test script * ekf_control: do not run mag fusion if tilt is not aligned. Reset some variables on ground even if mag fusion is not running yet. It could be that it runs later so we need to make sure that those variables are properly set. * ekf_control: move controlMagFusion and related functions to mag_control.cpp * ekf control: check for validity of mag strength from WMM and falls back to average earth mag field with larger gate if not valid * ekf control: remove evyaw check for mag inhibition * ekf control: change nested ternary operator into if-else if * Ekf: create AlphaFilter template class for simple low-pass filtering 0.1/0.9 type low-pass filters are commonly used to smooth data, this class is meant to abstract the computation of this filter * ekf control: reset heading using mag_lpf data to avoid resetting on an outlier fixes ecl issue #525 * ekf control: replace mag_states_only flag with mag_field_disturbed and add parameter to enable or disable mag field strength check * ekf control: remove AUTOFW mag fusion type as not needed This was implemented for VTOL but did not solve the problem and should not be used anymore * ekf control: use start/stop mag functions everywhere instead of setting the flag * ekf control: Run mag fusion depending on yaw_align instead of tilt_align as there is no reason to fuse mag when the ekf isn't aligned * AlphaFilter: add test for float and Vector3f
5 years ago
mag_control.cpp
covariance.cpp
drag_fusion.cpp
ekf.cpp
ekf_helper.cpp
estimator_interface.cpp
gps_checks.cpp
mag_fusion.cpp
optflow_fusion.cpp
sideslip_fusion.cpp
terrain_estimator.cpp
vel_pos_fusion.cpp
gps_yaw_fusion.cpp
imu_down_sampler.cpp
EKF: Add Emergency yaw recovery using EKF-GSF estimator (#766) * EKF: Use common rate vector calculation for offset corrections * EKF: Remove duplicate matrix entry calculations * EKF: Create a EKF-GSF yaw estimator class * EKF: add emergency yaw reset functionality * EKF: remove un-used function * EKF: Ensure required constants are defined for all builds * EKF: Fix CI build error * Revert "EKF: remove un-used function" This reverts commit 93005309c7f3794414ad99c86218b3062e00bbd3. * EKF: Replace in-lined Tait-Bryan 312 conversions with function call Also remove unnecessary operations * EKF: Remove unnecessary update of external vision rotation matrix * EKF: Use const * EKF: use const * EKF: don't use class variable as a temporary variable * EKF: update comments * EKF: Improve efficiency of yaw reset Use conversion from rotation matrix to Euler angles instead of quaternion to euler angles. * EKF: use const * EKF: remove un-used struct element * EKF: more descriptive function name * EKF: use existing matrix row operator * EKF: remove unnecessary rotation matrix update * EKF: Use square matrix type * EKF: Improve protection for bad innovation covariance * EKF: Use matrix library operations * EKF: Replace memcpy with better alternative memcpy bypasses compiler sanity checks and is unnecessary in this instance. * EKF: Split EKF-GSF yaw reset function Adds a common function to support yaw reset that can be used elsewhere. * EKF: Use common function for quaternion state and covariance yaw reset * EKF: Replace inlined matrix operation * EKF: Use const * EKF: Change accessor function name * EKF: Use const * EKF: Don't create unnecessary duplicate variable locations * EKF: Remove duplicate covariance innovation inverse * EKF: Don't create unnecessary duplicate variable locations * EKF: Rely on geo library to provide gravity * EKF: Improve protection from bad updates * EKF: Reduce effect of vibration on yaw estimator AHRS * EKF: Improve yaw estimator AHRS accuracy during manoeuvre transients
5 years ago
EKFGSF_yaw.cpp
Range check cleanup (#782) * EKF: centralize range finder tilt check * Ekf-control: do not double check for terrain estimate validity isRangeAidSuitable can only return true if the terrain estimate is valid so there is no need for an additional check * range_finder_checks: restructure the checks to avoid early returns There is now only one clear path that can lead to the validity being true. Furthermore, if the _rng_hgt_valid is true, we can trust it and we don't need for additional checks such as tilt. The case where we need to provide fake measurements because the drone is on the ground and the range finder data is bad is already handled in "controlHeightFusion" so there is no need to hack the range finder checks with that. * Add Sensor and SensorRangeFinder classes The purpose is to encapsulate the checks for each sensor in a dedicated class with the same interface * SensorRangeFinder: encapsulate in estimator::sensor namespace * EKF: rename _sensor_rng to _range_sensor * Range checks: include limits in valid range * RangeChecks: update comment in the continuity checks * RangeChecks: move more low-level checks in functions Also move setTilt out of the terrain estimator, this is anyway protected internally to not compute cos/sin if the parameter did not change. * Sensor: remove unused virtual functions Those are not required yet but can still be added later * SensorRangeFinder: re-organise member variables Also rename getRangeToEarth to getCosTilt * SensorRangeFinder: split setSensorTilt and setCosMaxTilt functions * SensorRangeFinder: Add a few unit tests - good data - tilt exceeded - max range exceeded * SensorRangeFinder: set hysteresis in us instead of ms * SensorRangeFinder: Add more tests * SensorRangeFinder: update continuity, hysteresis and stuck tests * SensorRangeFinder: rename variables * SensorRangeFinder: get rid of "delayed" specification From the SensorRangeFinder class point of view, it's not relevant to know if the data is delayed or not * SensorRangeFinder: move time_last_valid out of stuck check * SensorRangeFinder: rename file names to sensor_range_finder * SensorRangeFinder: address Kamil's comments * SensorRangeFinder: Add more tilt tests * SensorRangeFinder: store current tilt offset This is to avoid recomputing cos/sin functions at each loop
5 years ago
sensor_range_finder.cpp
)
add_dependencies(ecl_EKF prebuild_targets)
target_compile_definitions(ecl_EKF PRIVATE -DMODULE_NAME="ecl/EKF")
target_include_directories(ecl_EKF PUBLIC ${ECL_SOURCE_DIR})
target_link_libraries(ecl_EKF PRIVATE ecl_geo ecl_geo_lookup)
set_target_properties(ecl_EKF PROPERTIES PUBLIC_HEADER "ekf.h")
target_compile_options(ecl_EKF PRIVATE -fno-associative-math)