rename follow_me_status to follow_target_status
enable follow_target_estimator on skynode
implement the responsiveness parameter:
The responsiveness parameter should behave similarly to the previous
follow-me implementation in navigator. The difference here is that
there are now two separate gains for position and velocity fusion.
The previous implemenation in navigator had no velocity fusion.
Allow follow-me to be flown without RC
SITL tests for follow-me flight task
This includes:
- Testing the setting for the follow-me angle
- Testing that streaming position only or position
and velocity measurements both work
- Testing that RC override works
Most of these tests are done with a simulated model
of a point object that moves on a straight line. So
nothing too spectacular. But it makes the test checks
much easier.
Since the estimator for the target actually checks new
measurements and compares them to old ones, I also added
random gausian noise to the measurements with a fixed seed
for deterministic randomness. So repeated runs produce
exactly the same results over and over.
Half of the angles are still missing in MAVSDK. Need to create
an upstream PR to add center left/right and rear left/right options.
These and the corresponding SITL tests need to be implemented
later.
sitl: Increase position tolerance during follow-me
Astro seems to barely exceed the current tolerance (4.3 !< 4.0)
causing CI to fail. The point of the CI test is not to check
the accuracy of the flight behaviour, but only the fact that the
drone is doing the expected thing. So the exact value of this
tolerance is not really important.
follow-me: gimbal control in follow-me
follow-me: create sub-routines in flight task class
follow-me: use ground-dist for emergency ascent
dist_bottom is only defined when a ground facing distance sensor exist.
It's therefore better to use dist_ground instead, which has the distance
to the home altitude if no distance sensor is available.
As a consequence it will only be possible to use follow-me in a valley
when the drone has a distance sensor.
follow-me: point gimbal to the ground in 2D mode
follow-me: another fuzzy msg handling for the estimator
follow-me: bugfix in acceleration saturation limit
follow-me: parameter for filter delay compensation
mantis: dont use flow for terrain estimation
follow-me: default responsiveness 0.5 -> 0.1
0.5 is way too jerky in real and simulated tests.
flight_task: clarify comments for bottom distance
follow-me: minor comment improvement
follow-me: [debug] log emergency_ascent
follow-me: [debug] log gimbal pitch
follow-me: [debug] status values for follow-me estimator
follow-me: setting for gimbal tracking mode
follow-me: release gimbal control at destruction
mavsdk: cosmetics 💄
To return Exponential Values, which is helpful for reducing the
sensitivity of the stick around the centered value (0), since it's
exponential curve.
Useful for user adjustment implementations, where accidentally touching the stick
wouldn't have so much effect when using the Exponential value, compared
to using the raw position value.
Weather vane should only set a yawrate setpoint, but no yaw setpoint.
Setting it to NAN when WV is active makes sure that whatever _yaw_setpoint
is set previously (e.g. through Waypoint) is not used.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Otherwise the setpoint from weather vane is constantly overwritten by it,
even if the yaw stick is not moved.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
This fixes the issue when changing the altitude during a goto for
example, where the vehicle was going backwards and upwards to reach the
closest point to the line. Now the vehicle simply goes towards the
target waypoint.
This is done by inheriting from FlightTaskManualAltitudeSmoothVel again.
The altitude change by command is taken care of by switching
to the apporach when the altitude difference is big enough and
switching back once the altitude is close enough.
The altitude of the command is not perfectly reached but this can
only be done smoothly when the Orbit has full control over the
altitude smoothing. The independent altitude smoothing is not kept
because it was lacking stick handling like altitude lock and smooth
transitions when opening and closing the vertical position loop.
I think they were forgotten and it leads to side effects:
- The acceleration feed-forward does not get executed
- The acceleration setpoint is NAN when initializing the altitude
smoothing when arriving at the circle
Since the same parameter is used to generate the trajectory and to
saturate the controller, there is no additional space for the output of
the position controller once it is filled with the feedforward, letting
the altitude grow uncontrolled.
To avoid weird cases where the altitude is different enough and
the offtrack state flies to the target altitude instead of the closest
point on the track between the waypoints.
In MPC_YAW_MODE 3 (along trajectory), the flight task is asked to
produce a yaw setpoint. If the previous yaw value was NAN (e.g.: during
early takeoff), the setpoint should then be reset to the current
estimate.
It was meant as an example for an easy to use interface of a
motion primitive with a minimal implementation. But the implementation
is much worse than the jerk optimized trajectory. We rather
work on making it easier to use. #18390 was a first step towards that.
Alessandro Simovic