Robotic Arm to mimic Human arm
Problem Statement
To make a robotic arm mimic the motion of a human hand.
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Approach
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The robotic arm mimics the motion of the human hand. This is achieved using 3 acceleremeters, flex sensor and EMG electrodes. When the robotic arm picks up an object, the Force sensitive resistors (placed on the gripper) measure the weight of the object and actuate the hydraulic actuator (glass cylinder in the video) and thus make the artificial muscle (orange balloon) to expand. When the object is released by the robotic arm, the opposite action occurs and the artificial muscle contracts back to its original position. This artificial muscle is supposed to be fixed to the fingers of the human hand in order to feel the haptic feedback - weight of the object being lifted by the robotic arm. This is just a prototype which goes to show that such a haptic system has very high potential to be used in tele-surgeries. The microcontroller used in this project is ARM7 - LPC2148.
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More details can be found here.
This project was in collaboration with Raja Balaji, Jinesh Shah and Abhishek Menon.
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Figure 1. OWI 535 Robotic Arm
Project Presentation