Gesture Controlled SMA Actuated Robotic Hand

A robotic hand actuated by shape memory alloy springs and controlled using a gesture glove.

This project aims to present an innovative interface between a Shape Memory Alloy (SMA)-based robotic hand and a glove equipped with flex sensors. SMAs are chosen as actuators as they have an excellent force-to-weight ratio and produce no noise. The Nickel-Titanium SMA has proven to be one of the most beneficial materials in actuation applications owing to its high power-to-weight ratio and high achievable actuation strains. The project’s human-machine interface (HMI) component utilizes a glove equipped with flex sensors. These sensors capture user gestures, and a machine learning algorithm interprets this data, enhancing gesture recognition accuracy. The classified gestures are then wirelessly transmitted to the robotic hand, forming a seamless link between user intent and robotic action.

3D printed Robotic Hand with SMA actuators.
Left: Hand Gesture Glove. Right: SMA-actuated Robot Hand.
The SMA actuated robotic hand actuating a tool.