請問各位大大:
在VStabi官網中/User Manual/Pro functions/Setup Tips 內的內容:
Setup Tips
During IRCHA some professional Pilos updated or installed new Units and complain about too low rates on the cyclics. Id like to give some hints why this is the case, and what to do to get these insane rates without loosing the nice V5 performance. Please keep in mind, that this guide is for experienced pilots only.
The V5 uses same as V4 Optimizers to find the best possible neutral point of the system. That means, it adjusts internal parameters so that the original helis movements are best fit to the reality. This gives best stopping behavoiur possible and maximum theroretical proximity of stick movements to the heli movements.
There are some limits that have to be respected: The Optimizer can only work if there is some headroom in the control loop. A control loop that is at its limits, cannot be optimized. In our case the limit is the cyclic ring. This is different to 4.0, where the optimizers ran, even if the cyclic ring was active giving some by far to high values.
So in 5.0 the optimizers learn function is inhibited as long as the cyclic ring is active. They still work the same if the cyclic ring is not active. If you do an Optimizer flight, with extremly high rate setting, and use full stick deflection to do flips and rolls, the optimizers will not move at all. You will see a lot "Cyclic Ring touched" Messages in the log in this case.
Manual Optimization
Knowing this, there are some other possibilities to get the high rate setting done. You can edit the optimizer values by hand. In 5.0 this possibility is new. If you move them up manually, you can get any rate your heli is capabale of. Its a bit difficult to say when it is too much, since the algorithm has some other facilitys to avoid hard strikebacks and bobbing effects even with horribly wrong optimizer settings.
A simple pattern to see a little bit of it is doing a quarter loop from normal FF, and if the Heli is vertical, immediately push/pull full collective some cycles. If the Nose goes up and down, the optimizer value is not ideal. If it stays vertical, it is optimal.
However, Pilots that do hard 3D with extreme rates dont care much about such small effects that show up in figures that nobody will show in a nice 3D Flight. If you agree here, simply set the optimizers as you like.
If you set them higher, the Heli will respond more aggressivly, The Rate will get very high if the agility is set high too. On very high settings the heli will develop a strikback at hard cyclic stops.
If the Value is to low, the reaction will feel laggy and the rate requested by the agility setting will not be reached fully. Sometimes the heli develops slight undershoot effect on very small inputs.
Reduced Rate Optimization
If you still like to find the best neutrality point with high rate settings, you can use a trick to temporarily reduce the Input rate during the optimizer flight.
Use i.e. dual rate on your tx to reduce the throw to 60%. Do an optimizer flight with flips in both directions on both axis at full deflection. Now you get an valid optimizer value. Deactivate the Optimizer, and return the throw at your tx to 100%. Now you can use the higher rates.
Its important to set the agility to what you expect to have. Set it to 115 for insane setups, if think more is simply not possible. Do not change the agility slider after optimization flight since it resets the optimizer. However you can note the result and enter it manually later, or store it in a setup file.
Please note, that the logfile message "cyclic ring is active" only shows up, when the ring is overdriven very much! A slight touch of the ring is not noted in the logfile, since this is a very common event that happens really often. So this event points to a massive limitation of the cyclic ring.
以上這段是在講甚麼?小弟英文不佳...很多看不懂!!
1.這是要在pro版本才有的嗎?
2.小弟是用大V 5.2 express版，但是還是覺得升降、副翼的滾轉速率不夠，而且D/R又只可減少...小弟在cyclic中設定8度的數據已用到110(也就是實際量已有約9.5度的循環)，但是飛起來也完全感覺不出來機子跟真的設定8度比有比較靈敏，滾轉速度也沒增加，有調跟沒調一樣!!而且飛行風格已經選擇靈敏了!!如果還想更靈敏要怎麼調?D/R加到120%有用嗎?解析度是不是會降低?
另外問題:
3.小弟機子在PIT一拜急上急下，尾舵打滿舵自旋，總覺得自旋delay非常嚴重(譬如瞬間急上同時打尾舵自旋，尾舵都會遲滯嚴重，甩不太動的感覺)，這有的調嗎?(轉速1800~2250都試過，一樣遲滯!!只不過低轉更嚴重)尾舵行程已經吃滿了!!
4.延續上面問題，小弟 idle-1~3 尾舵D/R都是100%，位甚麼我停旋狀態連續尾舵滿舵自旋，由idle-1的1800rpm切idle-2的2000rpm，自旋速度就慢了一截(尾舵保持滿舵!)，再切到idle-3的2200rpm更慘!!同樣滿舵自旋速度更慢，而且只是停旋而已!!為甚麼會這樣?有的調嗎? |
發表於 2012年4月18日 08:40 PM
