FeiYu Tech FY-41AP - Manual (Page 24)

Guilin Feiyu Electronic Technology Co., Ltd
Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyudz.cn [email protected]
- 24 -
Control parameters adjustment
 RC Sensitivity
RC Sensitivity determines the reaction speed of attitude from the command (the bigger the value
the quicker the reaction). Increase it for sharper and quicker leveling action after the command stick is
released. Unstable shaky flying and a control feeling of stiffness and rigidness will result if the value is
too high; and sluggish leveling action and slow braking if it‘s too small.
 Control Gain
Control gain used for stabilizing the flight attitude (correlated to the severity of the Pitch and Roll
stick). If you release the Pitch or Roll stick after giving commands, the multi-rotor should be back to
hovering state.
Control P: If the reaction of multi-rotor in this procedure is too soft (large delay), please increase
the basic gain slowly (10%-15% each time) until vibration emerges after you release the stick. Then
decrease the gain a little until vibration just disappears. Now the gain should be perfect.
Control I: This value generally does not need adjustment.
 Course control gain adjustment
The way of tuning the Yaw gain is the same as the way of adjusting the Tail Gyro. If you want fast
stick reaction speed, increase the gain, otherwise decrease the gain. However, the spin of multi-rotor is
produced by the counter torque force, and the magnitude of which is limited. Therefore, a large gain will
not produce tail vibration like a helicopter, but instead have a severe reaction at the start or stop of
motors, which will affect the stabilization of the other directions.
 Vertical control Gain
Vertical control Gain is used for hovering Mode.
Control P: You use two methods to judge if the Vertical gain is good enough: 1) If the multi-rotor
can lock the altitude when the throttle stick is at center position; 2) If the change of altitude is small
during the flight along a route. You can increase the gain slowly (10% each time) until the vibration
emerges along the vertical direction or the reaction of throttle stick is too sensitive, then decrease
20% of the gain. Now it is a suitable Vertical gain.
Control I: This value generally does not need adjustment.
 Navigation control Gain
Navigation control Gain controls the parameters use for control hovering point.
Control P: please increase the basic gain slowly (2-3 each time)until the vibration emerges in the
hovering point. Then decrease the gain a little until vibration just disappears. Now the gain is
perfect.
Control I: This value generally does not need adjustment.