ASSISTIVE PARTIAL LIMB EXOSKELETON (APLE)

Abstract

The objective of this project is to develop a robotic orthosis using non-invasive sensors and motors to facilitate enhanced musculoskeletal function of the lower and upper forearm. The way to achieve it is by developing a partial exoskeleton using a digital servomotor located at the elbow joint of the arm, as well as a combination of surface electromyography (EMG), strain gauges, linear displacement sensors, and potentiometer sensors. The target consumer of this product would be hospitals to treat patients that suffer from injuries and diseases such as spinal cord injuries (SCI) or ALS, also known as Lou Gehrig's disease. As the sensors detect electrical signals to the muscles of a patient, the motor would assist in extending and contracting the arm. The use of linear displacement sensors would aid in monitoring the range of the movement and regulate the movement of the motor, as not to overextend the patient’s axis of rotation. Developing a partial exoskeleton not only simplifies the construction and reduces the price, but it also acts as a framework for independently functioning limbs. Rather than using a full body harness, one can use the partial exoskeleton to help the body to do physical exercises.