Comparison between using spectral analysis of electrogonimeter data and observational analysis to quantify repetitive motion and ergonomic changes in cyclical industrial work

Article Abstract:

Posture classification has been used in various studies of repetitive motions linked with upper extremity musculoskeletal disorders. A spectral analysis method using electrogoniometric data was compared with observational job analysis. Spectral analysis was able to resolve differences in repetitiveness, RMS deviation and sustained posture, and direct measurement results were more precise than observational analysis.

Posture

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An analytical method for characterizing repetitive motion and postural stress using spectral analysis

Article Abstract:

Spectral analysis is investigated as a means to characterize frequency of movements per unit time using elementary peg transfer task. Electrogoniometers are available to measure wrist posture movements while in a monotonous task, but efficient analytical methods are not available for counting the degree of repetitiveness and interaction with postural stresses. Spectral analysis can be extended to resolve differences in repetitiveness, postural stress, and sustained posture for other facets of repetitive manual tasks.

Physiological aspects, Hand, Spectrum analysis, Spectroscopy

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Forces associated with pneumatic power screwdriver operation: statics and dynamics

Article Abstract:

The statics and dynamics of pneumatic power screwdriver operation were investigated in order to predict forces acting against the human operator. Based on tool geometry, mass, orientation in space, feed force and torque build up, a static force model is described.

Science & research, Cutlery and Handtool Manufacturing, Cutlery, Handtools, and Hardware, Cutlery, Hand Tools & Hardware, Hand tools, Ergonomic aid

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