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Unread 26-03-2012, 14:14
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RyanN
AKA: Ryan Nazaretian
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Team Role: Mentor
 
Join Date: Jun 2006
Rookie Year: 2005
Location: Austin, TX
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Re: Voltage Drop problems

Quote:
Originally Posted by squirrel View Post
Some teams have a program element that divides the pwm command by battery voltage, to boost shooter speed when voltage drops.

We have an encoder to detect shooter speed, and a closed loop speed control system.

You might also change your operating procedture so you stop all the other motors on the robot before using the shooter.
Another thing to try, assuming you're using Jaguars is to use the voltage ramp mode. To do this, update the firmware on them, and enable the voltage ramping mode by changing some jumpers around. Documentation is on the TI-Jaguar website.

2012 MDL-BDC24 & MDL-BDC FAQs

This should reduce the current shock to the system which is causing your voltage to drop due to resistances in your robot.
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Previous teams:
Team Fusion, FRC 364
Garnet Squadron, FRC 4901

Last edited by RyanN : 26-03-2012 at 14:17.