Besides of knob PID tuning it is now possible to use throttle channel
to ramp-shape PID coefficients. This can be used to lower some PIDs on
VTOL while sinking to prevent wobble.
To use the feature select throttle as control input, choose throttle
range max and min values, assign the instance to particular PID
coefficient and define a range for it. When throttle is lower than
defined throttle range min value (or higher than max), then min and max
PID values will be used accordingly. Changing throttle from throttle
min to max will linearly scale PID value.
Note that it is possible to set MinPID > MaxPID. In that case increasing
control input value will decrease the PID coefficient.
Up to 3 independent instances can be configured. The number can be
increased changing the UAVO definition, but at the cost of extra RAM.
This module will periodically update values of stabilization PID settings
depending on configured input control channels. New values of stabilization
settings are not saved to flash, but updated in RAM. It is expected that the
module will be enabled only for tuning. When desired values are found, they
can be read via GCS and saved permanently. Then this module should be
disabled again.
