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104 Commits

Author SHA1 Message Date
CarlOlsson 5c8b22b43f ekf: return beta test ratio in get_innovation_test_status 
Signed-off-by: CarlOlsson <carlolsson.co@gmail.com>
 2017-12-18 15:48:36 +01:00
Paul Riseborough b0ad8269a5 EKF: enable separate monitoring of aux velocity innovations 2017-11-21 11:18:09 +11:00
Paul Riseborough 8e30c2666d EKF: Add support auxiliary velocity observation 
This enables the EKF to use an additional NE velocity measurement. This can be used to improve position hold stability when landing using a beacon system for positioning by fusing the beacon velocity estimates.
 2017-11-21 11:18:09 +11:00
Paul Riseborough a2b24fa960 EKF: Protect against ground effect induced static pressure rise during landing and takeoff. 
Apply a dead-zone to the vertical position innovation if using baro for height and if in the ground effect region during and just after takeoff.
Method needs to be activated externally.
Turns off automatically after 10 seconds or if specified height gained.
 2017-11-17 21:41:31 +11:00
Daniel Agar d9c8af54bd
EKF add print_status() with memory usage 2017-11-16 14:11:34 -05:00
Daniel Agar 75d1ed894c
EKF simplify RingBuffer allocation check 2017-11-16 13:09:17 -05:00
Paul Riseborough d785a19c0a EKF: delay final allocation of observation buffers until required 2017-11-16 19:47:04 +11:00
Paul Riseborough 7852c0ed03
Merge pull request #312 from PX4/pr-ekfExtVisQuat 
EKF: Enable operation with arbitrary External Vision reference frame
 2017-11-12 08:35:39 +11:00
Paul Riseborough bba3f70a0e EKF: reduce prediction time step from 12 to 8 sec 
Reduces susceptibility to incorrect estimation of acceleration bias during sustained yaw rate.
Requires an increase in RAM allocation of 837 Bytes to allow for the longer IMU and output predictor buffers that can be created.
 2017-11-02 09:27:33 +01:00
Paul Riseborough 01d68ef67c EKF: Enable use of rotated external nav estimates 2017-11-01 08:33:57 +11:00
Paul Riseborough 063533afae EKF: Add method to enable the IMU bias states to be reset externally 2017-10-26 10:41:39 +11:00
Paul Riseborough cd2ca57ec2 Merge pull request #339 from PX4/ekfPosCtrlLimits-wip 
Ekf pos ctrl limits wip
 2017-10-23 06:57:23 +11:00
Paul Riseborough 79995b2c15 Create total energy control system implementation 
This is a new, clean and streamlined variant of the mathematical derivation I created a few years ago.
 2017-10-22 20:37:40 +02:00
Paul Riseborough 929c5c2b37 EKF: enable gps fusion flag to be false while fusing air data 2017-10-20 14:44:37 +11:00
Paul Riseborough 9857fb9eb6 EKF: publish control limits for optical flow navigation 2017-10-20 14:22:06 +11:00
Paul Riseborough 68bad48598 Merge pull request #330 from CarlOlsson/pr-add_get_wind_vel_var 
EKF: added get_wind_velocity_var function
 2017-10-12 09:12:54 +11:00
ChristophTobler 6cb99ce8a8 ekf: add function to get in air status 2017-10-03 22:36:33 +02:00
CarlOlsson 8200e4b218 EKF: added get_wind_velocity_var function 
Signed-off-by: CarlOlsson <carlolsson.co@gmail.com>
 2017-10-02 14:47:56 +02:00
Peter Dürr 5988900044 Add getters for a few private variables of the EstimatorInterface 
* For testing it is useful to have access to more internal states
* For the same reason I also promote the const FILTER_UPDATE_PERIOD_MS to
  public
 2017-08-14 12:02:03 +02:00
Peter Dürr a2ed0a76f9 Make the destructor of EstimatorInterface virtual 
* This is a sane choice (and should arguably always be done for classes with
  virtual methods to avoid undefined behavior)
* It is required for wrapping the EstimatorInterface with SWIG (without virtual
  destructor, deriving from the EstimatorInterface leads to
  -Werror=delete-non-virtual-dtor).
 2017-08-14 12:02:03 +02:00
Paul Riseborough cc5db74d1b EKF: Add true airspeed accessor 2017-08-07 09:19:48 +10:00
Paul Riseborough e1fe5b2229 Revert "Revert "Split get_terrain_vert_pos() into valid and get_vpos"" 2017-07-19 17:52:35 +10:00
Paul Riseborough c887b02f21 Revert "Split get_terrain_vert_pos() into valid and get_vpos" 2017-07-19 17:33:48 +10:00
ChristophTobler eae0522dc2 split into get_terrain_valid and get_terrain_vert_pos 2017-07-17 16:42:42 +02:00
Paul Riseborough d446f66105 EKF: Add a fixed wing mode with setter function 2017-07-08 11:13:40 +02:00
Paul Riseborough eb1e73ec81 Merge pull request #283 from PX4/ekf_matrix_cleanup 
EKF matrix typedef cleanup
 2017-07-03 21:02:24 +10:00
Daniel Agar c44488fdb8
EKF matrix typedef cleanup 2017-06-19 11:10:01 -04:00
Paul Riseborough c48b879843 Merge pull request #276 from CarlOlsson/feature/only_update_mag_states 
EKF: Add feature to use the mag to only update the mag states
 2017-06-14 11:04:14 +10:00
Paul Riseborough fed4a9bc5a EKF: add vertical position derivative output 
Add calculation of a vertical position derivative to the output predictor. This will have degraded tracking relative to the EKF states, but the velocity will be closer to the first derivative of the position and reduce the effect inertial prediction errors on control loops that are operating in a pure velocity feedback mode.
Move calculation of IMU offset angular rate correction out of velocity accessor and into output predictor.
Provide separate accessor for vertical position derivative.
 2017-06-12 10:45:46 +10:00
CarlOlsson 871ebb251b EKF: Changed get_control_mode to coyp 32 bits 2017-06-01 11:02:56 +02:00
CarlOlsson be16406b35 EKF: Add feature to use the mag to only update the mag states 2017-05-26 11:29:21 +02:00
Daniel Agar 3919d60f66
ekf2 initialization fixes 2017-04-24 18:56:50 -04:00
Paul Riseborough c607941e2f EKF: Allow external setting of air density for multi-rotor drag fusion 2017-04-16 13:07:12 +02:00
Paul Riseborough 3758c5a09d EKF: down-sample drag specific force data 2017-04-16 13:07:12 +02:00
Paul Riseborough 465b145929 EKF: Add multi-rotor drag model for wind estimation 2017-04-16 13:07:12 +02:00
Paul Riseborough 0d7e7e9d81 EKF: Don't use EKF origin in GPS drift check calculation 
The GPS drift calculations need to be able to run independently of the EKF origin.
 2017-04-12 13:11:34 +02:00
Paul Riseborough 040639837e EKF: Use common timeout test for reporting deadreckoning 
Use a parameter to set the time-out threshold
Use a class variable for the time-out flag
Clean up comments
 2017-03-15 07:57:38 +01:00
Paul Riseborough 5fb24c3032 EKF: Reduce EKF prediction delta time jitter 
Make the target EKF rate an integer multiple of the IMU rate. This slightly increases the average prediction time step for the EKF from just over 10msec to 12msec, but the variation reduces significantly which makes filter tuning more deterministic.
Improve the algorithm used to adjust the collection time criteria to reduce jitter in the correction.
 2017-03-10 10:14:06 +01:00
Paul Riseborough 8070691aa4 EKF: Add accessor function for velocity accuracy 2017-02-25 21:17:01 +01:00
Paul Riseborough d6abf3f2e4 EKF: add accessor function for local position accuracy 2017-02-25 21:17:01 +01:00
Paul Riseborough b7d0b3c4d0 EKF: Improve naming of WGS-84 accuracy accessor function 2017-02-25 21:17:01 +01:00
Paul Riseborough d22599b440 EKF: Add reporting of inertial dead-reckoning status 2017-02-25 21:17:01 +01:00
Daniel Agar 2750961be6 c++11 initialization cleanup (#237) 2017-02-05 13:05:10 -05:00
Lorenz Meier 453bde73f8 ECL: Simplify / correct estimator interface 2017-01-15 10:17:41 +01:00
Daniel Agar d668a2d798 clang-tidy performance-unnecessary-value-param 2017-01-14 16:26:25 -08:00
Paul Riseborough 934890c2df EKF: Add validity flag to ekf origin reporting 
Flag is false until the origin has been initialised
 2016-12-28 00:56:09 +01:00
Paul Riseborough 5ad329b641 EKF: Fix variable names to match convention 2016-11-07 22:23:12 +11:00
Paul Riseborough d5b398ddb1 EKF: Minimise data buffer lengths 
Saves RAM and reduces output predictor errors by using the smallest data buffer length that meets time delay and update rate requirements.
 2016-11-07 09:06:45 +11:00
CarlOlsson 12aeaafbd3 adopted estimator_interface.h 2016-11-05 12:19:01 +01:00
Paul Riseborough b10b0184c5 EKF: Add IMU vibration calculation and reporting 
Add calculation and reporting of IMU delta angle and velocity coning and high frequency vibration
 2016-10-19 21:46:55 +11:00