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Radians in Action: Measuring Motion for Robotic Arms
Radians in Action: Measuring Motion for Robotic Arms
Are degrees the best way to model and describe the motion of a robotic arm? How do professionals describe and model robotic movement?
Learning Intentions:
Define and understand radians as a unit of angular measure, visualize and label key radian positions on the unit circle, relate radians to arc length and radius, and apply this understanding to describe and model the motion of a robotic arm.
Today's Concept:
We've been talking about angles in degrees, like 90 degrees for a right turn. But think about this: if a robot arm with a short forearm turns 90 degrees, its hand moves a certain distance. If an arm with a long forearm turns the same 90 degrees, its hand moves a much farther distance. The angle is the same, but the physical result is different. This can be confusing when we are trying to program the robot's speed or its range.
Today, we are going to learn a different way to measure angles, the radian. It's a unit that is built directly from the robot's own dimensions (its radius). It will allow us to link the angle the motor turns directly to the distance the hand travels, which is a much more powerful way to model our robot for the user.
Station 1
Station 1
Build It – Constructing & Visualizing Radians
Station 2
Station 2
Apply It– Modeling Robotic Arm Motion with Radians
Station 3
Station 3
Practice It– Motion Analysis with Radians & Degrees
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