Positional Analysis of Assisting Muscles for Handling-Assisted Exoskeletons

Abstract

In order to better design handling-assisted exoskeletons, it is necessary to analyze the biomechanics of human hand movements. In this study, Anybody Modeling System (AMS) simulation was used to analyze the movement state of muscles during human handling. Combined with surface electromyography (sEMG) experiments, specific analysis and verification were carried out to obtain the position of muscles that the human body needs to assist during handling. In this study, the simulation and experiment were carried out for the manual handling process. A treatment group and an experimental group were set up. This study found that the vastus medialis muscle, vastus lateralis muscle, latissimus dorsi muscle, trapezius muscle, deltoid muscle and triceps brachii muscle require more energy in the process of handling, and it is reasonable and effective to combine sEMG signals with the simulation of the musculoskeletal model to analyze the muscle condition of human movement.

Keywords: Anybody Modeling System; assisted exoskeletons; muscle activation; surface electromyography.

Figure 1

Model handling process and selection of muscle position.

Figure 2

Typical Wave Plus components.

Figure 3

Placement of chip electrodes.

Figure 4

Muscle activation of the 11 muscles in the treatment group.

Figure 5

Raw and pre-processed data of sEMG.

Figure 6

sEMG signals from 12 muscles of the same tester after pre-processing.

Figure 7

Four eigenvalues of the same muscle.

Figure 8

Muscle activation of medial femoral muscle treatment group compared with experimental group.

Figure 9

Comparison of the integral values and standard deviations of MVC in the treatment and experimental groups.

Figure 10

Comparison of four eigenvalues of the same tester.

Figure 11

Comparison of the four eigenvalues after averaging across all testers.