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594 Commits

Author SHA1 Message Date
Andrew Tridgell f66966ccae NavEKF: use new perf counter API 2015-10-20 18:16:15 +11:00
Paul Riseborough 240ea92947 AP_NavEKF: Re-center gyro bias limits on arming 
Allows the gyro bias to vary by up to +-10 deg/second before and after arming.
 2015-10-20 15:21:39 +11:00
Paul Riseborough 8515dda727 AP_NavEKF: Fix bug in vertical position derivative calculation 2015-10-20 15:21:39 +11:00
Paul Riseborough 6b3e114cd6 AP_NavEKF: Enable EKF1 to be disabled to reduce frame over-runs 2015-10-20 15:21:39 +11:00
Paul Riseborough 840f307d58 AP_NavEKF: Make EKF2 PosDownDerivative interface follow coding conventions 
Updates arising from peer review.
 2015-10-20 15:21:37 +11:00
Paul Riseborough dab658f6ed AP_NavEKF: Add methods to output and calculate vertical position derivative 2015-10-20 15:21:36 +11:00
Andrew Tridgell f5b5a3b0f8 AP_NavEKF: added EKF_DISABLE_INTERRUPTS 
this helps with performance tuning
 2015-10-20 14:37:41 +11:00
Andrew Tridgell 10fddf4c7e AP_NavEKF: enable optimisation level 3 for the EKF 2015-10-20 14:36:56 +11:00
Andrew Tridgell 6f36267a66 AP_NavEKF: fixed EKF error message during 10 second warmup 2015-10-16 14:58:46 +11:00
Gustavo Jose de Sousa afccf615d5 AP_NavEKF: use compass get_{field,offsets}() functions 
Both functions are equivalent, so we're going to simply use
get_{field,offsets}() instead of get_{field,offsets}_milligauss().
 2015-10-15 19:56:03 +09:00
Paul Riseborough 3479a0e209 AP_NavEKF: Prevent blocking of synthetic position fusion 
Fixes a potential error where changes to timing and arrival rate of magnetometer and baro data could block the fusion of synthetic position and velocity measurements, allowing unrestrained tilt errors during operation without GPS or optical flow.
Fusion of synthetic position or velocity measurements is now timed to coincide with fusion of barometer observations.
If a new barometer observation has not arrived after 200 msec then the synthetic position or velocity is fused anyway so that fusion of synthetic position or velocity observations cannot occur any slower than 5 Hz
 2015-10-13 14:05:36 +09:00
Paul Riseborough a895b16fa6 AP_NavEKF: Prevent GPS glitch activating EKF failsafe 2015-10-12 16:29:21 +09:00
Paul Riseborough f451a81ef9 AP_NavEKF: Add missing GPs check report 2015-10-10 21:22:49 +09:00
Paul Riseborough a3a1dabb94 AP_NavEKF: Update GPS check description and default setting 
Previous check default only checked the number of satellites and horizontal position accuracy.
Updated default value also checks HDoP and speed accuracy.
 2015-10-10 21:21:25 +09:00
Paul Riseborough ef5049862a AP_NavEKF: Add fix status to GPS check report message 2015-10-10 14:49:05 +09:00
Paul Riseborough 5177746c00 AP_NavEKF: Add reporting of GPS check status 2015-10-10 14:49:01 +09:00
Paul Riseborough d0080b66cd AP_NavEKF: Define a structure for reporting of GPS checks 2015-10-10 14:48:56 +09:00
Paul Riseborough 2b0434f089 AP_NavEKF: Improved detection of GPS glitch behaviour 2015-10-08 15:09:45 +09:00
Paul Riseborough d48d4ac950 AP_NavEKF: Add GPS glitching monitor to EKF status report 2015-10-08 15:09:43 +09:00
Paul Riseborough 8a9d9c04c5 AP_NavEKF: Add public function to declare GPS glitch 2015-10-08 15:09:40 +09:00
Paul Riseborough 21e4910149 AP_NavEKF: Allow user to select preflight GPS checks 2015-10-08 15:09:37 +09:00
Paul Riseborough cdae84aec1 AP_NavEKF: Additional pre-arm GPS quality checks 2015-10-08 15:09:34 +09:00
Paul Riseborough 8a66c9c2ed AP_NavEKF: Critical Bugfix 2015-10-08 10:54:34 +09:00
Randy Mackay b5c49e0792 AP_NavEKF: minor comment fix 
No functional change
 2015-09-24 16:57:36 +09:00
Jonathan Challinger 51fb13a329 AP_NavEKF: fix getLastYawResetAngle to return yaw reset system time 2015-09-24 16:57:33 +09:00
Paul Riseborough 02408861a1 AP_NavEKF: Remove unused function 2015-09-24 12:58:43 +10:00
Tom Pittenger e2fde36ec6 AP_NavEKF: index out of range due to incorrect assignment 2015-09-22 11:41:51 +09:00
Jonathan Challinger d2b103b323 AP_SmallEKF: replace incorrect quaternion rotations with library call 2015-09-22 11:15:05 +10:00
Paul Riseborough 5c32bb8858 AP_NavEKF: Add pre-flight check for gyro quality 2015-09-21 17:06:31 +09:00
Paul Riseborough 8cfde42e15 AP_NavEKF: Ensure bad mag data cannot cause the heading to reset too often 2015-09-16 15:13:37 +09:00
Paul Riseborough 930f730612 AP_NavEKF: Reset mag and heading states to try and pass pre-flight checks 2015-09-16 15:13:36 +09:00
Staroselskii Georgii b5b6d767bd AP_NavEKF: make EKF use milligauss 2015-09-09 10:38:16 +10:00
Andrew Tridgell 0ca534bfab AP_NavEKF: only call calcGpsGoodToAlign if we need to 
avoid calling it once we have an origin. This avoids some calculations
and string operations
 2015-09-08 16:07:33 +10:00
Andrew Tridgell c10ce3ffbd AP_NavEKF: added prearm_failure_reason() 2015-09-08 16:07:33 +10:00
Paul Riseborough 21f873662c AP_NavEKF: Prevent false triggering of optical flow takeoff detection 
Now that we have a pre-arm check in place to detect bad lidar, the motion check is unnecessary and can false trigger for copters with flexible undercarriages or on uneven ground.
 2015-08-27 20:57:38 +09:00
Randy Mackay ec2bc5e41d NavEKF: use maxf when retrieving vibration levels 
This reduces the performance hit that was caused by multiple calls to get_vibration_levels
 2015-08-19 16:44:36 +09:00
Randy Mackay 629a5fd714 NavEKF: IMUSwitchState enum 2015-08-19 16:44:31 +09:00
Randy Mackay c179ed5253 NavEKF: IMU ratio set to primary accel when neither IMU is used 
This forces the EKF IMU ratio to indicate which IMU is used except that it will be "0" in the unlikely case that the third IMU is used
 2015-08-19 16:44:28 +09:00
Paul Riseborough 559cc29635 AP_NavEKF: Add hysteresis to IMU switching logic 2015-08-19 16:44:26 +09:00
Paul Riseborough 12e884ba6b AP_NavEKF: Modify method used to check for vibration errors 
This method checks for consistency between accelerometer readings and switches to the unit with the lowest vibration of the difference exceeds 0.3g
The threshold of 1.7 m/s/s corresponds to a maximum tilt error of 10 deg assuming one IMU is good, one is bad and the EKF is using the bad IMU.
 2015-08-19 16:44:24 +09:00
Randy Mackay 0b981d38e8 NavEKF: incorporate use_gyro and use_accel 2015-08-19 16:44:17 +09:00
Randy Mackay 8b17d32994 NavEKF: check baro health before consuming 2015-08-12 16:32:48 -07:00
Gustavo Jose de Sousa f7fd9e3d99 AP_NavEKF: standardize inclusion of libaries headers 
This commit changes the way libraries headers are included in source files:

 - If the header is in the same directory the source belongs to, so the
 notation '#include ""' is used with the path relative to the directory
 containing the source.

 - If the header is outside the directory containing the source, then we use
 the notation '#include <>' with the path relative to libraries folder.

Some of the advantages of such approach:

 - Only one search path for libraries headers.

 - OSs like Windows may have a better lookup time.
 2015-08-11 16:38:20 +10:00
Randy Mackay 0acfcbfa81 NavEKF: use primary compass instead of first instance 
Thanks very much to staroselskii for finding this bug
 2015-07-17 10:02:42 +09:00
Paul Riseborough 610595bfb9 AP_NavEKF: Prevent position drift between arming and takeoff when using OF 2015-07-13 10:54:36 +09:00
Paul Riseborough 8b4b0b9576 AP_NavEKF: Add accelerometer clip monitoring and isolation 
Isolates an accelerometer that is clipping  and attempts to use the one that is clipping less.
 2015-07-12 16:49:19 +09:00
Paul Riseborough 4fb7beba4b AP_NAvEKF: Prevent failure due to magnetometer fusion numerical errors 
If a badly conditioned covariance matrix causes negative innovation variances, then the filter will diverge. The previous approach of increasing process noise was not effective in some cases, so a hard reset of the covariance matrix has been adopted to guarantee recovery.
This fixes a numerical error observed using the replay on flight log which had significant periods of compass rejection.
 2015-07-02 18:07:22 +10:00
Andrew Tridgell 686b1137fa AP_NavEKF: added vehicle specific initial gyro bias uncertainty 2015-06-30 16:16:26 +10:00
Randy Mackay 9f17fc17ab NavEKF: update parameter descriptions 2015-06-24 16:25:14 +09:00
Paul Riseborough 87e6a24154 AP_NavEKF: Add public method to reset EKF height datum and baro alt 2015-06-24 16:25:11 +09:00