Difference between revisions of "DEWBOT X Hatboro-Horsham Shooter Failure"
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At Hatboro-Horsham, DEWBOT X was generally unable to fire balls with the shooter, especially during autonomous. This problem was never resolved during the course of the competition. Actions taken towards resolution included: | At Hatboro-Horsham, DEWBOT X was generally unable to fire balls with the shooter, especially during autonomous. This problem was never resolved during the course of the competition. Actions taken towards resolution included: | ||
| − | + | [[image:HHair_-_Match_11_pressure.jpg|450px|right]] | |
:*Modifying shooter code to extend the fire period | :*Modifying shooter code to extend the fire period | ||
:*Adding a third and then a fourth air storage tank | :*Adding a third and then a fourth air storage tank | ||
:*Replacing the shooter solenoid | :*Replacing the shooter solenoid | ||
| − | + | During match 11, a GoPro camera was set up to watch the pressure gauges. This video shows that the pneumatic system lost pressure at an extraordinary rate during the first 20 seconds of teleoperated play, consuming the entire storage reserve (two 35 in3 tanks at the time) during those 20 seconds. Thereafter, both storage and regulated pressure were identical, ranging between 30 and 45 psig. This pressure is too low for the shooter cylinder to retract the winch's dog gear. The compressor never turned off during the match. | |
So the proximate cause of the shooter failure was low air pressure. | So the proximate cause of the shooter failure was low air pressure. | ||
Revision as of 16:50, 8 March 2014
At Hatboro-Horsham, DEWBOT X was generally unable to fire balls with the shooter, especially during autonomous. This problem was never resolved during the course of the competition. Actions taken towards resolution included:
- Modifying shooter code to extend the fire period
- Adding a third and then a fourth air storage tank
- Replacing the shooter solenoid
During match 11, a GoPro camera was set up to watch the pressure gauges. This video shows that the pneumatic system lost pressure at an extraordinary rate during the first 20 seconds of teleoperated play, consuming the entire storage reserve (two 35 in3 tanks at the time) during those 20 seconds. Thereafter, both storage and regulated pressure were identical, ranging between 30 and 45 psig. This pressure is too low for the shooter cylinder to retract the winch's dog gear. The compressor never turned off during the match.
So the proximate cause of the shooter failure was low air pressure.
Air Demand
There are three users of compressed air, the Roller Frame, Shot Angle and Shooter. Air requirements for each of these are:
