The velocity smoothing library constrains the maximum vellocity.
I set the default constraint to 0 to find these exact issues.
The heading smoothing did not initialize the maximum velocity
which in this use case is the maximum heading.
So heading was always constrained to 0 -> north until this change.
The defintion of the custom symbol M_PI_PRECISE
was not included in one of the only places it's used.
Looks like a mistake that happened in
34c852255e
possibly because a lot of things are included
almost everywhere and if the include order
ligns up there are no compile errors.
Note that the unit test also passes without
thechange. But the VelocitySmoothing's
local_time would get NAN. This would leads to
wrong trajectory calculations.
Problem: Zero maximum jerk and/or zero
direction would lead to divisions by zero in
various cases depending on the exact configuration and code path.
Solution: There was already one check for the
direction being zero in one path and I
summarized to check in both
updateDurations...() functions the product
of direction * max_jerk to not be zero
because that's exactly the value calculations
devide by.
The manufacturer uses both naming schemes, RoboClaw more than Roboclaw
but it's always one word and hence I think it's more consistent to name
it the latter.
During a round corner the L1 distance calculation
was only done in 2D and the z-axis coordinate
was directly coming from the next waypoint.
This lead to an unpredictable altitude profile
between two waypoints. Sometimes almost all
altitude difference was already covered during
the turn instead of going diagonally.
This is required to support fixed pitch propeller helicopters that have
no collective but only cyclic pitch with two degrees of freedom and
hence only two servos.
The amount of thrust in the body z axis is then controlled using the
motor speed which makes particularly sense on coaxial helicopters
that need to control yaw with changing motor speeds already.
but this time compared to
2fbb70d9ca
the minimum thrust is ramping to not produce a thrust jump.
The better long term solution will be to always have airmode but
with the effect limited to a magnitude of MPC_MANTHR_MIN.
high rates and (super) expo are necessary for
- acrobatic flying
- fpv
- racing
but they are not useful for:
- a typical vehicle's rate control tuning
- beginners
The defaults that I set in #8036 were put with the assumption Acro mode
is mainly used on racing drones for acrobatic manouvers but instead
users including me use it most of the time to tune any drone.
When tuning the rates are lowered and expo disabled.
My suggested strategy is to make the beginner friendly rates without
expo which are good for tuning the default and document more clearly
how this can be raised for acrobatic flying in documentation and later
on hopefully also directly in the ground station UI
on an Acro mode specific page.
because sprintf is deprecated on MacOS
and CI fails with warning -> error:
'sprintf' is deprecated: This function is
provided for compatibility reasons only.
Due to security concerns inherent in the
design of sprintf(3), it is highly
recommended that you use snprintf(3) instead.
I updated all versions to the newest one that's used anywhere.
Then at least the straing can be found with full text search.
It's another step towards understanding and unifying the CI environment.
Case: A vehicle is already operating but has no stick input or another
source than RC. When RC stick input is switched to either because it gets
first time available or as a fallback to joystick then the mode was
immediately changed to the switch position. This can lead to loss of
control e.g. when the vehicle is flying far away and the
mode switch of the RC is in some fully manual piloted mode.
I added tests to cover the cases where RC mode initialization is expected
and also unexpceted because the vehicle is already armed.
modules__ instead of module__ prefix
The module depends on the hysteresis library and probably because
it compiles with the still prevalent global includes the dependency
is not declared.
also for the other linux target builds. It's a follow up to
e5503480e3
I wasn't aware that there are multiple different
container versions used for almost the same build.
Channel values stay over one unit test but some tests assumed they are
reset each time. Reset the channel after these mode button tests.
Parameters survive between unit tests presumably as long as
the bianry runs. Reset them if a test requires that.
This allows PWM and all other output methods to configure
stopped, idling and full thrust points and use them consistently.
The fact that a fixed wing motor can be stopped when zero thrust
is demanded is explicit and could in principle even be disabled.
The mechanism is the same as for a standard VTOL stopping the
multicopter motors in the fixed wing flight phase.
This allows to consistently define:
Motor stopped - disarmed PWM
Motor idling - minimum PWM
Motor at full thrust - maximum PWM
Any allocation can then distinctly decide if
a motor should be running or not depending
on the context and also explicitly command that.
Matthias Grob