#9: Author: Pmagall,
Posted in this forum: Wed 09-06-2004, 14:59
Relativamente aos ditos "Glitch" ou falhas.... transcrevo um excerto de um artigo sobre este assunto. Sempre dá para ter uma maior precepção do que poderá estar a originar estes problemas.
Se alguem necessitar da tradução, é só pedir que ajudo, não tenho é muito tempo para traduzir.
-----------------
]".....Glitching, Twitching, and Erratic Behavior
--------------------------------------------------------------------------------
NO I'm not talking about a teenager! LOL
There are many situations that will cause "glitching". Unwanted radio noise is usually the culprit. Finding the source of this unwanted noise or spiking is part of the problem and correcting it is another. Here we are assuming, that the plane batteries are up to manufacturer recommendations and have been checked for proper performance. There is a differance in poor performance and glitching, although some poor performing components can cause glitching. This thread is intended to deal with erratic twitching of servos, erratic motor behavor and the sources of unwanted electical interferance.
Here are a few steps to help remedy the dreaded (GLITCH);
1.Be sure your antenna wire is in good shape, no internal wire breaks and no bad scuffs to the insulation. Also be sure that it is not run near metal components, such as the aluminum fuse of the SS. Also keep it as far away from the motor, ESC and servos as possible.
2.Be sure the antenna is the full length. (not shortened, not lengthened) It is cut to a specific length, by the manufacturer, to match the receiver frequency. Do not wind the antenna around anything and do not coil the antenna wire!
3.Be sure your brushed motor has noise supressor capacitors attached to both poles of the motor and that the ground is connected to the motor can. The older the motor the more prone it is to produce spikes, also the higher the speed of the motor the more prone it is to cause spikes. Excess heat of the motor is a factor. Replacing old or worn motors can help. A brushless motor and, or ESC can also create spikes.
4.Be sure to place the receiver as far away from the ESC, servos and motor as possible, these components are very prone to creating (electrical spikes).
5.Some areas where you fly can be flooded with outside radio interferance. Such as near cell towers, radio towers etc. near power lines, and even some alarm systems can create havoc. You might find that a new area to fly just might correct your problem.
6.A weak or slightly off frequency signal from your transmitter could be a problem. Try the transmitter with another plane that is set up with different components. Although this is not actual eletrical glitching, some of the results ressemble glitching.
7.If you suspect your motor or esc, to be the source of your problem, try this. One of the best and cheapest cures for (glitches) from motor and ESC noise is to use a feritte filter. You should place the feritte core, feritte ring or ferite bead on the line from the ESC to the receiver. These work best if placed as close to the receiver as possible. The feritte will help filter the spikes or impulses attached to your radio signal. These filters are reasonably priced from RS and other electonics supply venues. RS makes a clip-on version for less than 6 bucks. This is the one of the most simple to use and is very effective. Using the rings require you to wrap the ESC connecting wire around and through the ring. The beads slide onto the wire.
While I know this list is not complete it does cover some of the most frequent causes of motor and servo glitching. Hopefully it will help make someone's flying a little more enjoyable and (GLITCH) free!
Last edited by Pmagall on Thu 12-08-2004, 14:48; edited 1 time in total
|