View unanswered posts | View active topics It is currently Fri Nov 28, 2014 1:21 pm






Reply to topic  [ 4 posts ] 
Servos fail to hold position when motors are activated 
Author Message
Rookie

Joined: Fri Feb 18, 2011 10:51 am
Posts: 1
Post Servos fail to hold position when motors are activated
Our team is experience a problem where the 4 servos (which are all controlled as a group) lose their position when the drive train motors are used. Has anyone experienced this?

I took a look at the team's code and it seems fine to me so I am thinking this may be due to a voltage loss when the drive motors are activated.

The servos seem to recover inconsistently. If a servo value is set and not changed shouldn't it remain in the same position?

Thanks for any insight.


Fri Feb 18, 2011 10:59 am
Profile
Guru
User avatar

Joined: Sun Nov 15, 2009 5:46 am
Posts: 1347
Post Re: Servos fail to hold position when motors are activated
There is not enough information in your decription to tell what could be wrong.


Fri Feb 18, 2011 1:11 pm
Profile
Rookie

Joined: Sun Dec 05, 2010 11:58 am
Posts: 28
Post Re: Servos fail to hold position when motors are activated
That does sound like a low battery problem. Check to see if the servo controller isn't broken. Other than that, I have no idea. It would be nice to have a more detailed description of the problem.
I've found that if a servo stops responding, and you set it again, it recovers.


Fri Feb 25, 2011 1:58 pm
Profile
Rookie
User avatar

Joined: Mon Feb 23, 2009 12:40 pm
Posts: 27
Post Re: Servos fail to hold position when motors are activated
If the servos start to jump erratically when the motor is run, then the problem could be a bad motor. We had a problem last year when we started a sweeper to pick balls up off the floor, the robots servos started twitching. Eventually we swapped the motor out and the problem went away. If they don't hold position because they are overloaded, then obviously this won't help. Unless your battery is excessivly low, I wouldn't expect it to be a battery problem.


Fri Feb 25, 2011 2:41 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 4 posts ] 

Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  



Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by ST Software for PTF.