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Unit 5.pdf
1. Unit 5 - ERGONOMICS: Introduction, areas of study under
ergonomics, system approach to ergonomics model, man-
machine system. Components of man-machine system and
their functions work capabilities of industrial worker, study of
development of stress in human body and their consequences.
Computer based ergonomics.
3. Common Definitions:
“Ergonomics is essentially fitting the workplace to the worker. The
better the fit, the higher the level of safety and worker efficiency.”
Fitting the Task to the Human ~ Grandjean 1990
“ Ergonomics removes barriers to quality, productivity and human
performance by fitting products, tasks, and environments to
people.” ErgoWeb.com
8. Systems Approach
Ergonomics uses a holistic systemic approach to apply theory,
principles and data from many relevant disciplines,
◦ To design and evaluate tasks, jobs, products, environment and systems
20. Work Capabilities of Worker
Functions of Man as a Productive Element
Functions performed by man are unique and better:
• Ability to select his own inputs.
• Sensitive to wide variety of stimuli
• Reasoning
• Innovation and creativity
• Discriminating relevant from irrelevant signals
• Selective recall of old information
23. Work stress
Demands exceed ability to cope
Most likely if individuals experience:
•Lack of control
•Lack of social support
•Lack of direction
•Lack of information
•Conflict with others
•Physical work environment problems
•Violence or aggression
