Difference between revisions of "DEWBOT VII Design Team Page"

Revision as of 04:43, 24 January 2011

Head Mentor: Clem McKown

Student Lead: Sasha

Team:

Carly

Andrew

Douglas

Molly

Scott Featherman

Gary Deaver

David Moyer

Ben Kellom

Siri Maley

Pivot Drive Value Engineering ("Straw Man") - 22-November-2010

Ran a Value Engineering session on the 2010 Pivot Drive.

Value Engineering Slides (ppt) including "Straw Man" proposal for modular Pivot Unit.

Wooden Man - 28-November-2010

Based on feedback to the "Straw man" proposal on 22-November, an improved "Wooden Man" (pdf) design was developed to elicit further critique.

Scoring Models

Scoring Calculator that tallies individual and overall autonomous score, raw peg, uber-multiplied and logo bonus scores, race scores, and penalties into an overall match score. 9 Jan 2011, Siri.

Scenario Model allowing side-by-side and step-by-step comparison of 2 teleop scoring scenarios. 11 Jan 2011, Clem.

Strategy & Design

Results of the team's Game-Play Strategy Development sessions are available. 12 Jan 2011, Clem

Note that <G19> in The Game RevA appears to clearly rule out "the Strongman" Minibot strategy. 12 Jan 2011, Clem

Field Elements

Logomotion Scoring Grid. 12 Jan 2011, Clem

Arm Analysis

Analysis of arm motion for a robot with a 2-joint arm playing Logomotion. 12 Jan 2011, Clem
Arm analysis 2 for a robot with a 2-joint arm playing Logomotion, includes all scoring pegs. 15 Jan 2011, Siri
4-Bar arm analysis for single-pivot arm playing Logomotion. 17 Jan 2011, Siri

Pivot Drive

Email to Programming Team: Last year, angle sensor orientation and wheel orientation were arbitrary. We dealt with this by installing a custom potentiometer panel which allowed a correction bias to be set to align the wheels.
Since our 2011 pivots will be modular, I propose that we calibrate the sensor to the wheel during assembly. Sensor output would then be fixed versus wheel angle relative to the pivot module. Since each installed pivot module has a specific orientation within the robot chassis, the sensor output would also be fixed versus wheel angle relative to the robot chassis as well (although not identical for all pivots). The need for on-robot pivot angle calibration should thereby be eliminated.
Regards, Clem (15-Jan)

Email to Programming Team: Pivot control mathematics utilize the values of the robot wheelbase length and width. DEWBOT VII is expected to have a somewhat different wheelbase than DEWBOT VI.
DEWBOT VI Wheelbase: 21.5 in (wide) x 28 in (long)
DEWBOT VII anticipated Wheelbase: 20.75 in (wide) x 30.75 in (long)
The mathematics for Pivot Drive are described in papers posted at: Pivot Wheel Documents
Bien cordialement, Clem (15-Jan)

Thermal fit calculations for the Pivot Tube/Pivot Top assembly - 15-January, Clem

Minibot

Analysis of Minibot deployment considerations and concepts. Updated 23 Jan 2011, Siri.