programming the compressor

[archiver]

Posted by Ann Marie Rynning at 1/20/2001 6:18 PM EST


Other on team #500, Team USA, from Montville.



our team has the pneumatics and the compressor set up and running. however, due to the way that the programming is, once the compressor is at 110 psi, it starts going on and off every second or so to maintain that pressure. do you know how I could modify the program so that this doesn't happen? is there a way to make the compressor stay on for a minimum amount of time instead of it turning on and off rapidly?
thank you.

[archiver]

Posted by Ed Sparks at 1/20/2001 8:52 PM EST


Coach on team #34, The Rockets, from Bob Jones High / New Century High and DaimlerChrysler.


In Reply to: programming the compressor
Posted by Ann Marie Rynning on 1/20/2001 6:18 PM EST:



Build a "timer" in the software that delays turning off the compressor when it reaches the pressure switch setting. The delay should be no more than a few seconds because at or around 120 PSI the pressure relief valve on the compressor will open (for safety reasons).

[archiver]

Posted by Ed Sparks at 1/20/2001 9:25 PM EST


Coach on team #34, The Rockets, from Bob Jones High / New Century High and DaimlerChrysler.


In Reply to: Re: programming the compressor
Posted by Ed Sparks on 1/20/2001 8:52 PM EST:



Build a "timer" in the software that delays turning ON the compressor when the pressure switch says the tank is below pressure. You'll have to test to be sure you can afford the loss of stored volume (depends on the demand of your pneumatic system). Again this delay will probably be short.

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Posted by Mike at 1/23/2001 8:47 PM EST


Other from Grandview Heights High School.


In Reply to: programming the compressor
Posted by Ann Marie Rynning on 1/20/2001 6:18 PM EST:



Look under the white papers. There is a listing for programming the compressor there. Dan's e-mail is there too if you have more questions.

[archiver]

Posted by Warren Boudreaux at 1/24/2001 12:15 PM EST


Engineer on team #180, S.P.A.M., from South Fork & Martin County High School and UTC/Pratt&Whitney/NASA.


In Reply to: programming the compressor
Posted by Ann Marie Rynning on 1/20/2001 6:18 PM EST:



: our team has the pneumatics and the compressor set up and running. however, due to the way that the programming is, once the compressor is at 110 psi, it starts going on and off every second or so to maintain that pressure. do you know how I could modify the program so that this doesn't happen? is there a way to make the compressor stay on for a minimum amount of time instead of it turning on and off rapidly?
: thank you.
We found that if you can keep track of the number of actuator strokes, you can figure out how many strokes you can go before the accumulator pressure drops below 60psi. Use a multiplier for the bigger actuators. You'll only need a nibble of computer space since the counter isn't going to be very big. About 5 in our case. Hope it helps. See you at Nationals.