Robot Class. Are all robots created equal?

Transcription

1 Robot Class Are all robots created equal?

2 Robot Class Points to Remember: We add classes as we see new types of robots! None of the Classifications are any better (or worse) than any other. Robots can belong to more than one Class. Robot designs can sit between Classifications.

3 Robot Class - Definitions Standard Robot: (EV3 or NXT) Two motor-driven wheels. One or more unpowered wheels/sliders. May use 1-2 motors for manipulation of objects or attachments. Attachment: A team-designed construction that can integrate with the robot. Alters the abilities of the robot. Usually powered by a motor. Can be powered by other sources. Frame: A attachment designed to be a vehicle, operated by a robot.

4 Class 1 A Standard Robot without sensors

5 Robots (Class 1) A Standard Robot without Sensors Navigates by dead-reckoning alone. May have attachments which clip on to robot chassis. All tasks performed by robot movement OR extra motors. Can be complex or simple.

6 Robots (Class 1) Getting Your First Points at FLL 2011 Food Factor Lasse Deleuran

7 Robots (Class 1) Warnings: Dead-reckoning produces a different result each time a step is run. Consecutive dead-reckoning steps build up errors, making the entire program very unreliable. Common Scenario: Spending lots of time adjusting code that worked perfectly the day before.

8 Robots (Class 1) A successful team will: Keep programs simple and short. Use solid objects (like walls) to reduce error. Design robots to reduce variation in travel and turning. Use aiming jigs to reduce human error. Solve problems with engineering, not programming.

9 Class 2 A Standard Robot with sensors, built around Core Movement(s)

10 Robots (Class 2) A Standard Robot with Sensors, built around Core Movement(s) Attachments are secured to robot body, causing minor changes only. Planned Core Movement(s) to accomplish most missions. Missions carried out by robot, with abilities modified by attachments.

11 Robots (Class 2)

12 Robots (Class 2) Warnings: Plan Core Movement(s): Poorly planned robots can be stuck with a mechanism that makes it impossible to achieve certain missions. Poorly planned attachments can waste a lot of time in changeover. Class 2 Robots require programming and engineering skills

13 Robots (Class 2) A successful team will: Analyse the board and identify how Challenges are activated. Design a robot around Core Movement(s) capable of achieving the majority of missions. Design attachments to achieve missions not covered by Core Movement and have them clip on in standard ways. Navigate! Make full use of sensors and avoid deadreckoning.

14 Class 3 A Standard Robot with Sensors that uses self-powered or complex attachments.

15 Robots (Class 3) A Standard Robot with Sensors that uses complex attachments. Attachments are used to greatly alter robot shape and function. Attachments don t have to be secured to the robot. Missions are completed by the robot OR by attachments operating independently.

16 Robots (Class 3)

17 Robots (Class 3) Warnings: Robot bodies must be stable and designed to handle attachments. Robot performance can be altered by unbalanced attachments. Beware overbuilding! Complex devices are fragile and error-prone. This approach requires efficient code and engineering.

18 Robots (Class 3) A successful team will: Design a robot that can handle changes in balance and weight. Investigate independent power sources for attachments: e.g. gravity, elastic bands, or pneumatics. Choose sensors and locations that give the most flexibility. Design attachments to target clusters of missions in one action.

19 Class 4 A Standard Robot with Sensors that can operate independently OR within frames, and can operate large/complex attachments

20 Robots (Class 4) A Standard Robot with Sensors that can operate independently OR within frames, and can operate large/complex attachments Part 1: A versatile, Standard Robot with attachment points. Part 2: Frames that fit on/over/to the Core Robot. Often larger than Core Robot. Can be independent or left behind. Sensors are located on Core Robot or Frame.

21 Robots (Class 4)

22 Robots (Class 4) Warnings: Time is wasted if frames take too long to remove. Each frame will perform differently. Transport! Large frames are hard to carry and easy to damage. This approach favours engineering skill. Gears will be needed.

23 Robots (Class 4) A successful team will: Design a quick-release system for frame attachment. Design a robot with many attachment points and/or a standard cradle for all frames. Design frames with strong drive points or extra wheels. Power frames independently, or with motors on Core Robot. Complete many missions with each frame.

24