What is AttitudeControl and how to use it
switch. The helicopter should continue to hover in approximately the same position. Now
give some aileron or elevator stick input and release the stick when the helicopter reached
some oblique position. AttitudeControl should bring the helicopter back to the horizontal
position more or less rapidly.
Deactivate AttitudeControl and again tilt the helicopter by giving some stick input. Now
the helicopter will stay tilted if you release the stick. Only when AttitudeControl is
activated by flipping the switch again, the helicopter will be rotated back to horizontal
position as before.
If using an AttitudeControl operation mode with collective pitch control, moving
the thrust stick does not have any effect in some area as AttitudeControl takes over
collective pitch control as long as the thrust stick is in this area and AttitudeControl is
activated. Therefore make sure the thrust stick is in a position that will roughly produce
the same amount of collective pitch, before and while deactivating AttitudeControl.
Otherwise when deactivating AttitudeControl the helicopter would make a leap down,
if the thrust stick controls a smaller pitch angle than AttitudeControl.
For safety reason you should never take off or land with activated AttitudeCon-
trol. As AttitudeControl actively gives control commands to the control loop of MI-
CROBEAST PLUS, the swashplate may tilt to one side if the helicopter is not placed
perfectly level on the ground. This may cause the helicopter to tilt and crash when
trying to take off or when the motor is switched off and the main rotor is running out.
113.5 Fine tuning of AttitudeControl
• The amount of deflection of the AttitudeControl switch channel controls the Attitude-
Control gain. This determines the speed and roughness of the control input from At-
titudeControl. If the effect of AttitudeControl is too low resp. the heli rotates back
to horizontal position too slowly, increase the AttitudeControl gain by increasing the
deflection of the AttitudeControl channel (i.e. by using the servo throw adjustment for
this channel in the transmitter). If on the other hand the heli overshoots after reaching
neutral position and bobs briefly, maybe the AttitudeControl gain is set too high. Reduce
the gain accordingly. In such case also make sure that cyclic gain and cyclic feed forward
are well adjusted. It is recommended to adapt the AttitudeControl gain to the preferred
application. If you would like to use AttitudeControl as emergency rescue then set the
gain as high as possible. On the other hand when using AttitudeControl mainly as a
training aid, for example in 3D - mode, then make the effect of AttitudeControl rather
weak, so that the system does take over control gently.
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