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Gait behavior learning and prediction algorithm for robotic exoskeleton transparency control

Grant number: 19/13391-4
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): September 01, 2019
Effective date (End): January 12, 2020
Field of knowledge:Engineering - Mechanical Engineering
Principal researcher:Thiago Boaventura Cunha
Grantee:Bruno Pisi Garcia
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/07276-1 - CEPOF - Optics and Photonic Research Center, AP.CEPID

Abstract

Some applications of wearable robots (e.g. exoskeleton robots) focus in assisting humans in physically exhausting tasks such as carrying a heavy tool or backpack, for example. In these cases it is desired that the robot does not impede or resist the users movements, but only provides extra force for execution of the task in question. In other words, ideally, the robot should be imperceptible (i.e. transparent) to the user. Making a wearable robot imperceptible to the user is an extremely hard and complex control goal to reach satisfactorily. The constant and intrinsic interaction between human and robot and varied user-dependent behaviors are the main difficulties in the design of such cooperative control. In this work, we propose a new approach to transparency control. Its a learning and movement prediction algorithm based on segmentation and grouping of healthy user experimental data. From this data, we wish to predict the dynamics of trajectory segments and also the sequence of such segments. The gait style we will focus on is walking.

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