NDLI: A Robotic Hand with a Gentle Touch

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A Robotic Hand with a Gentle Touch

Content Provider	TeachEngineering: STEM curriculum for K-12
Author	Avila, Luis
Copyright Year	2014
Description	Students groups act as NASA/GM engineers challenged to design, build and test robotic hands, which are tactile feedback systems made from cloth gloves and force sensor circuits. Student groups construct force sensor circuits using electric components and FlexiForce sensors to which resistance changes based on the applied force. Students groups act as NASA/GM engineers challenged to design, build and test robotic hands, which are tactile feedback systems made from cloth gloves and force sensor circuits. Student groups construct force sensor circuits using electric components and FlexiForce sensors to which resistance changes based on the applied force. They conduct experiments to find the mathematical relationship between the force applied to the sensor and the output voltages of the circuit. They take several measurements—force vs. resistance, force vs. voltage—and use the data to find the best fit curve models for the sensor. Different weights applied to the sensor are used as a scalable force. Students use traditional methods and current technology (calculators) to plot the collected data and define the curve equations. Students test their gloves and use a line of best fit to determine the minimum force required to crack an egg held between the index finger and thumb. A PowerPoint® file and many student handouts are included.
Language	English
Access Restriction	Open
Rights Holder	Regents of The University of Colorado The University of Texas-pan American
Subject Keyword	Algebra Best Fit Line Circuit Prosthetic Tactile Electrical Engineering Biomedical Resistance Voltage Robot Feedback System Ohm's Law Force Sensor Robotic Glove Curve Fitting Force Linear Functions Line of Best Fit
Content Type	Text
Time Required	PT5H
Education Level	Class IX Class X Class XI
Pedagogy	Experimental Activity
Resource Type	Hands-on
Subject	Modern Physics

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