Previously the condition was based on hard coded height rate estimate and
setpoint values and an altitude error threshold. That showed to be leading
to false positives when the vehicle doesn't tightly follow the altitdue
ramp given by TECS to achieve a new altitude setpoint, and has become
completely infeasibly with the latest TECS rework that leads to non-ramped
altitude setpoint changes in the tecs_status message.
The new check no longer checks the altitude error but only the height rate
instead. It begins to integrate the height rate error once it detects an
uncommanded descend condition (height rate negative while setpoint is
positive). Integral threshold can be tuned by user (VT_QC_HR_ERROR_I).
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Strictly follow the following convention for tailsitter:
FW Attitude and FW rate controller always operate in the FW frame, meaning that roll is
roll in FW, which for tailsitter means around the yaw axis in the body frame. The interfaces
between modules is though always in body frame.
That enables us to do the axis transformations for tailsitter, that are currently distributed
all over the controller (attitude, rate, vtol module), only at the input and output data of modules.
Side effect is that the FW rate control tuning gains meanings change: while before the roll gains
where meant for the body axis, they are now always applied for the FW roll axis (also in hover). So
the naming now is correct for FW, while before it was for Hover.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
This failsafe flag is currently used for not allowing to re-transition to FW, as well
as disabling pusher assist in hover. Till now it was only possible to reset it with
a commanded transition to MC, which many ground station interfaces didn't allow
as the system, after a quad-chute, already was in MC mode.
Hereby it is changed to reset when a new transition to FW is triggered (either via
RC switch or MAVLink command). It is the users responsibility to assess the situation
after a quad-chute happened to try to transition to FW again, manually proceed/land
the vehicle in MC, or let it finish the defined behavior after a quad-chute.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
* VTOL: take home_position into account for ground clearance
For approximating distance to ground in case there is no valid distance sensor
data, subtract the home position altitude from the local position altitude.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Co-authored-by: Matthias Grob <maetugr@gmail.com>
* Enable motor controls for fixed wing mode in tailsitters
This commit enable motor controls in fixed wing mode for tailsitters
This is needed for enabling quad tailsitters
* VTOL: differential thrust in FW: adapt params to be generic for all axes
Until now only suppoted on yaw axis. Not to be supported also on Roll and Pitch.
- VT_FW_DIFTHR_EN: make bitmask for all three axes independently. First bit is Yaw,
sucht that existing meaning of VT_FW_DIFTHR_EN doesn't change.
- VT_FW_DIFTHR_SC: rename to VT_FW_DIFTHR_S_Y and add same params for roll (_R) and
pitch (_P).
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
* Integrate differential control bits to three axis control
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
This is to prevent that that data from non-recent publications of the virtual
attitude setpoints are used in the transition code.
It removes the previous implementation where the update_transition_state()
method was only run when both mc and fw virtual att sp where recent, independetly
of whether both are used or not.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
- As it is always only used for the vehicle command ack message
- It was a duplicate, hence making it error prone for maintainment
- The uORB message comments were updated to make the relationship with
the MAVLink message / enum definitions clear
Special case tiltrotor: instead of passing a 3D thrust vector (that would mostly have a x-component in FW, and z in
MC), pass the vector magnitude as z-component, plus the collective tilt. Passing 3D thrust plus tilt is not feasible as they
can't be allocated independently, and with the current controller it's not possible to have collective tilt calculated
by the allocator directly.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
[4] is reserved for Flaps, so also having the tilt on it was preventing us from
using flaps on tiltrotors, and other ripple effects.
By using [8] the tilt is separated from all other channels - it requires to increase the size of
actuator_controls by 1 to 9.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Roman Bapst