Difference between revisions of "DEWBOT VIII Shooter"
From DEW Robotics
MaiKangWei (talk | contribs) (→Prototypes) |
MaiKangWei (talk | contribs) (→Prototypes) |
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Prototyping was limited and the final shooter closely resembled the prototype. | Prototyping was limited and the final shooter closely resembled the prototype. | ||
<gallery widths=250 heights=250 perrow=3> | <gallery widths=250 heights=250 perrow=3> | ||
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Image:DB8_120111_csm-6.jpg|Assembling prototype | Image:DB8_120111_csm-6.jpg|Assembling prototype | ||
Image:DB8_120111_csm-7.jpg|Testing undershot wheel configuration | Image:DB8_120111_csm-7.jpg|Testing undershot wheel configuration | ||
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Image:DB8_120112_csm-3.jpg|Prototype mounted on drill press platform | Image:DB8_120112_csm-3.jpg|Prototype mounted on drill press platform | ||
Image:DB8_120114_csm-18.jpg|Testing prototype on [[DEWBOT VI]] chassis | Image:DB8_120114_csm-18.jpg|Testing prototype on [[DEWBOT VI]] chassis | ||
+ | Image:DB8_120128_csm-12.jpg|Testing the integrated Lift/Shooter assembly prototype | ||
</gallery> | </gallery> | ||
Revision as of 20:26, 30 July 2012
1640's Shooter requirements for Rebound Rumble are:
- This is a shooter; not a dumper
- Primarily targeting the top basket
- High scoring reliability (>67%) from Key or closer
- Ability to feed balls to alliance scoring field from the outbounder station
- Backspin to drop into basket and provide dead landing upon feeding
- Fast recycle; one shot per second (minimum)
- Automatic rangefinding & aiming
- Maintain low CoM for bridge balancing & preventing bridge tips
The Shooter system comprises:
- A fixed-geometry overshot wheeled shooter
- A tachometer to determine and thereby enable control of shooter wheel speed
- A camera for aiming
- A Drive Mode specifically for aiming the robot
- A narrow-beam sonor to determine range to back-board
Contents
Key Technical Challenges & Statements
- A high shooter elevation (trajectory) will be needed to score in the top basket
- High trajectory shooters shooting from the Key cannot be easily blocked (regardless of shooter height)
Concepts
- Wheeled shooter was the only serious concept examined (well, there was some catapult testing early)
- An overshot wheeled shooter offers the desired backspin
- To manage mass & cost, it was decided early that a decision to use pivot drive (which was subsequently made) would also become a decision to fix the shooter azimuth relative to the chassis. If we use pivot drive, we will aim the robot; we will not use a turret to aim the shooter.
Prototypes
Prototyping was limited and the final shooter closely resembled the prototype.
Testing prototype on DEWBOT VI chassis
Design Details
55 deg