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Unread 12-03-2013, 16:59
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Simplicity is Complicated!
AKA: Bryan Culver
FRC #0033 (The Killer Bees)
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Join Date: Jan 2010
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Re: Floor pickup Vs. feeder station

This is an interesting discussion; Let's add some math.

Assumptions:

-the “floor pickup” robot is a robot that can score 42 points in auto (under pyramid) or 30 points (from midfield) and can hang in 5 sec for 10 points.

-the “30 point hanger” is a robot that scores 18 points in auto and can hang in 15sec for 30 points.

-All robots are 100% accurate in auto and 90% accurate in teleop. All robots always hang.

-Teleop cycles from the human player station and back are 20 seconds. (seems reasonable with high level play including Defense.) Floor loading and shooting from around your side of the pyramid takes 10 sec.

-Assume that the robots are not getting in each other’s way.

-A third pick should not be able to meet the above (or they are the most ridiculous sleeper in FRC history.) I will be running through examples with only two robots (presumably alliance captain and first pick.)

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Example 1: “Floor pickup” + “30 point climber”

Auto points: 42 “floor pickup” + 18 “30 point climber” = 60 auto points

Teleop for “30 point climber” = 54+30 (climbing) = 84
120sec-15sec = 105sec in match to work with
105sec/20sec per trip = 5.25 trips round down ~5 trips
5trips * 4 disks = 20 disks
20 disks *90% accuracy = 18 disks
18 disks * 3 points = 54 points


Teleop for “ground pickup” =66 +10(climb) = 76
120sec - 5sec = 115sec in match to work with
20sec per trip * 5 trips = 100 sec of feeder station trips
5 trips * 4 volleys = 20disks
20 disks *90% accuracy = 18disks
18disks * 3 points = 54 points
At this point in the match there are 4 disks on the ground and 15sec before hanging.
4disks on ground * 3points= 12 points
54 points + 12 points = 66 points


Total teleop points: 84 points +76 points= 160 points

Total match points: 60auto + 160 teleop = 220 points

Example 2: “30 point climber” + “30 point climber”

Auto points: 18 + 18 = 36 points

Teleop for “30 point climber”: 54 + 30(climb) = 84 points

Total teleop points: 84 points * 2 robots = 168

Total match points: 36auto + 168teleop = 204 points

Example 3: “ground pickup” + “ground pickup”

Auto points: 42+30= 72 points

Teleop for “ground pickup”: 76 points

Teleop for “ground pickup” two: 64 points
See “ground pickup” in example 1 excluding the 12 extra points from picking up off the ground (because the first “ground pickup” robot got those.)

Total teleop points: 76 + 64 = 140 points

Total match points: 76auto + 140teleop = 216 points

Total match points without middle field auto: 60auto + 140teleop = 200 points

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In summary:

-The “ground pickup” + “30 point climber” is the most effective at 220 points.
-The “ground pickup” + “ground pickup” was the second most effective with 216 points.
-The “30 point climber” + “30 point climber” was the third most effective with 204 points.
-The “ground pickup” + “ground pickup” was the least effective if the second “ground pickup” could not get the disks in the middle of the field.

The scores are obviously very close. I think that both strategies are very evenly matched. If we had real teams competing in any of these scenarios it would come down to what the third robot did during the match.

Huh, longest post ever.
Regards, Bryan
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Last edited by BJC : 12-03-2013 at 17:05.
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