build your own robot arm douglas gorham april 2011 1
TRANSCRIPT
Build Your Own Robot Arm
Douglas Gorham
April 2011
1
Build Your Own Robot Arm
We will build a robot arm from simple materials
What will we do today?
2
Robot ArmWhy is this experiment useful to teachers and students?
3
It teaches technological designIt requires mathematical calculations for design It relates to the studies of motion and forceIt requires communication through writing (design) and orally (explaining the design principles)
Robot Arm
Geometry:– Use visualization, spatial reasoning, and geometric
modeling to solve problems– Analyze characteristics and properties of two- and three-
dimensional geometric shapes and develop mathematical arguments about geometric relationships
Problem Solving:
– Recognize and apply geometric ideas in areas outside of the mathematics classroom
– Apply and adapt a variety of appropriate strategies
Communication:
– Communicate mathematical thinking coherently and clearly to peers, teachers, and others
Principles & Standards for School Mathematics
4
Canadarm 1, also known as Shuttle Remote Manipulator System
Used on the space shuttle to maneuver loads of up to 29 tons
Developed by SPAR Aerospace Ltd., out of Edmonton
Robot ArmThe Canadarm
5
Canada’s primary contribution to the International Space StationMobile Servicing Station– Space Station Remote
Manipulator– Mobile Remote
Servicer Base System– Special Purpose
Dexterous Manipulator17 meters fully extended
Robot ArmThe Canadarm 2
6
Dextre
Robot Arm
We will build a robot arm from simple materialsThe arm must pick up a plastic cup from a distance of 45cm– Lift the cup to a height of at least 15cm– Bring the cup back to rest and release it
Pick up cup upside down
Building the Canadarm 3
7
Robot ArmYou cannot get too close…
You cannot get any closer than 45cm to the cup at any time
CupStudent
Robot Arm
45cm
8
Robot ArmAvailable Materials
9
Robot Arm
Divide into teams of two (2)Review the requirementsDiscuss a solution and create a sketch of your design Build a model of your design with given materialsTest your model
Outline and Procedures
10
Robot Arm
Discuss and agree upon a redesign– If needed after testing, or– to enhance the previous design
Rebuild your robot armRetest your modelAnswer reflection questions as a team
Redesign after testing
11
Robot Arm
1. The arm must pick up a plastic cup from a distance of 45cm
– Lift the cup to a height of at least 15cm
– Bring the cup back to rest and release it
2. Lift and release the cup when it is upside down
Design requirements
12
NEW DESIGN REQUIREMENTLift and release the cup when it is full with weight, or water bottleUse materials on yourtable to fill cup(candy, pencils…)
Robot ArmUPDATE FROM SPACE AGENCY
13
Robot Arm
1. The arm must pick up a plastic cup from a distance of 45cm
– Lift the cup to a height of at least 15cm
– Bring the cup back to rest and release it
2. Lift and release the cup when it is upside down
3. Lift and release water bottle
Design requirements
14
NEW DESIGN REQUIREMENTNeed a single device that can manipulate a cup as well as a pen.Device can use two different endmanipulators
Robot ArmUPDATE FROM SPACE AGENCY
15
Robot Arm
1. The arm must pick up a plastic cup from a distance of 45cm
– Lift the cup to a height of at least 15cm
– Bring the cup back to rest and release it
2. Lift and release the cup when it is upside down3. Lift and release water bottle4. Use the same design (possibly with a modified end
manipulator) to lift a pen
Design requirements
16
Robot Arm
What was one thing you liked about your design? What is its main weakness?What is one thing you would change about your design based on your experienceAre there algebraic and physical principles that can be applied to this activity?How would you modify the instructions to create a better experience for the participants?
Reflection Questions
17