1 Embedded Inertial Measurement Unit Sensors Provide Real time Joint Feedback
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Soft robotics hold promise in the development of safe but powered assistive wearable units for infants. Key to that is the development of closed-loop controllers that may also help regulate pneumatic pressure in the device’s actuators in an effort to induce controlled motion on the user’s limbs and be ready to trace different types of trajectories. This work develops a controller for smooth pneumatic actuators aimed to energy a pediatric soft wearable robotic gadget prototype for higher extremity motion assistance. The controller tracks desired trajectories for a system of soft pneumatic actuators supporting two-degree-of-freedom shoulder joint motion on an infant-sized engineered mannequin. The degrees of freedom assisted by the actuators are equal to shoulder motion (abduction/adduction and flexion/extension). Embedded inertial measurement unit sensors provide real-time joint suggestions. Experimental knowledge from performing reaching tasks utilizing the engineered mannequin are obtained and in contrast in opposition to floor fact to guage the performance of the developed controller. Results reveal the proposed controller leads to accurate trajectory monitoring efficiency throughout a wide range of shoulder joint motions.


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