VStabi Pioneer of Flybarless

Expert Settings of Governor

Startup Speed

Set how fast the governor shall respond on inputs. In general this reaction speed will never be exceeded on increasing throttle. Decreasing throttle is not limited. This parameter is applied to increasing/decreasing headspeed as well.

Differential Gain

In case of drops or increases of the headspeed, this gain helps stabilizing the headspeed. Differential Gain is useful to avoid P wags, but too much gain will introduce more quick wag of the headspeed. Its a bit like looking in the future. The more gain, the more stable the system against fast headspeed changes. too much gain  gives a high speed wag. This Parameter is reduced to 50% in hover automatically.

Integral

The Integral amount compensates for long term changes in the throttle needed. This is needed for i.e discharging effects of the battery on electrics, on nitros the temperature increases over the time, needing some small long term adjustments. The problematic part is the high speed descent, where the rotordisk is unloaded very long. In this case, the integrator shall not be changed too much because its not a long term effect.

Proportional Limter

This limits the maximal proportional value used. A limiter set to 0 will disable the p amount completely. The limiter is needed to avoid too quick throttle changes which overload the motor. In some cases its better to give up some headspeed, but to overload the motor. This is done with this limiter. The Headspeed wil change more if the limiter is reduced. The overall stability is better with a small limiter.

Cyclic Load Addition

This specifies the feed forward from the cyclics (ail and elev) to the governor. Do axial rolls, and check if the headspeed is maintained. If the headspeed increases at the start of the roll, lower this value. If the headspeeds drops, increase it. The Value is not very sensible, so do changes of at least 10 points to see a siginifficant difference.

Collective dynamic

This is an dynamic addition from the collective to the throttle. Every time the collective is moved quickly, additional power is needed. This parameter adds throttle in this case. It shall compensate for the additional energy needed to accelerate the heli. If the acceleration is finished, the satatic load of the throttle curve is sufficient. Values of about 40 is usual, up to 80 is possible.

Collective Reduction

If this parameter is set, the collective amount is reduced in case of the governor being at full throttle. The overshoot the governor needs is estimated and scaled by this parameter. This gives the amount of reduction of the maximum collective. With this headspeed drops can be reduced in case of ver much maximum collective

Throttle Minimum

This is usually an icreased idle position. The governor will not lower the throttle below this position as long as it is active.<p>If your engine has the tendency to quit during long flares, increase this position. If this value is too high, you find that the governor over speeding and will never reach the requested RPM. Valid values are from –100 to +100 (full range of throttle)

Defines the VBars internal throttle curve. steep curves like 100-50-0-50-100 are used on nitros, shallow curves like 30-10-0-10-30 are used on electric helis. In the setup is defined if this curve is used or if the curve of the transmitter is active.

Set a parameter set that fits the most common uses. It is intended as default.