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标题: 我的小暴龙尾舵机报销了！ [打印本页]
作者: daka    时间: 2005-7-1 02:08
标题: 我的小暴龙尾舵机报销了！
这两次航线尾巴老是很难锁住了。以为是机体抖动和陀螺仪没有固定好。到今晚试飞发现，我的尾舵机终于不动了。嗨！它算是完成自己的使命了。练悬停时间长了，舵机是不是容易挂呀。听说，悬停时舵机位置传感器常常工作在有些区域，磨磨就不听话了。
作者: tomye    时间: 2005-7-1 08:57
别扔掉啊，可以修的，尾舵机报销可能是因为PNP或NPN的三极管承载电流较小的缘故，去电子商城配一个承载电流大的装上，马上就好了哦。。。
作者: iceman    时间: 2005-7-1 09:30
我的副翼舵机开始不听话了，经常失控，可能要退休啦！
作者: daka    时间: 2005-7-1 11:00
betmanofbmw  在 2005-7-1 08:22 发表:

从MS官方网站的说法，尾舵机速度低于0。11S/60的话，磨损速度会非常快，文中没有给出更详细的解释，呵呵，很多模友以为我没事找事，我也懒得说免得讨人嫌，不过既然你碰到这个问题，就告诉你，信不信在你了。
Th ...



感谢betmanofbmw大大提供的信息。值得各位模友关注，我想模友应该理智面对这样的技术评测。下面是全部的原文，各位有兴趣可以看看

Article 044.002 - posted 5/29/05

Issue: How to know when a tail servo is about to fail?

Care must be taken when experimenting with a new tail rotor servo that has specifications that it might be suitable for the use on the rudder of a helicopter. It may rated as fast and is ball bearing, but that does not really tell us anything. If operated on a rate mode gyro (not heading hold) then this servo may perform quite well, but our discussions here are for tail servos specifically used with the MS044 Heading Lock gyro. Typically micro tail rotor servos will follow two paths when used with heading lock gyros, they will either burn up in less than 5 flights which is a clear indicator that the servo is not compatible or they will work reliably for some time period before showing signs of imminent servo failure.

The tell tail signs that your tail servo is near failure will be noticed as gain adjustments are needed on the gyro or the tail starts kicking out (holding ok, then a sudden rotation or complete piroette before the gyro catches again) and you have checked that nothing else has changed (the pushrod is still tight, the servo is still firmly mounted on the helicopter, the helicopter's tail control system is tight, the tail gears are not slipping on the tail drive shaft) it is time to change the servo as you are on the brink of complete servo failure. To know for sure that a servo is failing, hover the helicopter for a full minute, land and check the case temperature of the servo. Commonly the servo will get quite hot before it fails outright. This pending failure can also be measured in an increase in current draw from the servo, but this is much harder to identify in flight without some type of amperage meter installed, so we rely on a decrease in performance of the servo as a baseline criteria to replace it.

In summary, the servos that we use on our micro helicopters are really not suited for use with heading lock gyros and we have not influenced the radio and servo manufacturers enough to produce a high quality servo. Likely, the predominant reason is the low volume of consumers who would pay $80-$100 for a digital micro servo is not attractive to the servo manufacturers. As consumers, we know that the first servo company that produces a reliable digital micro servo is sitting on a gold mine with the huge volumes in micro helicopter sales.
作者: iceman    时间: 2005-7-1 11:52
这就是我为什么说舵机应该有多种形态的原因，因为应用的地方不同，当然要有不同的对策，单一形态的舵机已经无法满足特殊方面的应用。是该改变了！！！
作者: daka    时间: 2005-7-1 12:58
iceman  在 2005-7-1 09:30 发表:

我的副翼舵机开始不听话了，经常失控，可能要退休啦！


舵机不行就赶紧换调吧，不然失控了容易损失惨重哦！

我的小暴龙换上新尾舵机后效果回复了。但我总感觉自己的尾舵机安装方式有问题，那根长长的舵杆到舵机处是弯曲的。:em22:不知道，其它模友如何布置尾舵机和舵杆。:em17::em17:
作者: iceman    时间: 2005-7-1 13:20
daka  在 2005-7-1 12:58 PM 发表:

舵机不行就赶紧换调吧，不然失控了容易损失惨重哦！

我的小暴龙换上新尾舵机后效果回复了。但我总感觉自己的尾舵机安装方式有问题，那根长长的舵杆到舵机处是弯曲的。:em22:不知道，其它模友如何布置尾舵机和舵 ...


谢谢关心！副翼舵机我已经换了。关于尾舵机安装看我的图片，应该是直的！！！否则运行不顺畅和阻力大容易导致舵机过早损坏，我的尾舵机飞了150次了还在用呢。:em06:


[ Last edited by iceman on 2005-7-1 at 13:23 ]
作者: daka    时间: 2005-7-1 16:47
你的舵机支架的安装孔位是不是重新设定过，不然如何能刚好拉直呢？
我也是斜45度安装的。对了你好像使用了舵盘外侧的孔位吧。我用舵杆升级件的球头锁定后发现舵杆容易变形呀。
作者: iceman    时间: 2005-7-1 17:52
我没有重新设定过任何孔，只要调节舵机的安装角度就可以了，令舵机摇臂杆垂直时的连杆呈一直线即可。舵杆是会有轻的微变形但问题不大。
作者: lsybox    时间: 2005-7-1 22:11
用的是什么舵机?
作者: iceman    时间: 2005-7-2 17:35
lsybox  在 2005-7-1 10:11 PM 发表:

用的是什么舵机?

GWS pico +f/bb轴承版的，效果还不错。

舵机安装质量非常重要，否则寿命一样不长的。:em15:
作者: lsybox    时间: 2005-7-3 11:45
iceman  在 2005-7-2 05:35 PM 发表:

GWS pico +f/bb轴承版的，效果还不错。

舵机安装质量非常重要，否则寿命一样不长的。:em15:


你用的全部都是GWS的吗?怎么配?要多少米?
亚拓9X和6G的怎么样?



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