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Understanding Human Factor Engineering for System Reliability

Explore the principles of human factor engineering and system reliability, covering topics such as ergonomics, human-machine systems, and error prevention. Learn how components interact, ensuring systems function effectively in various environments.

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Understanding Human Factor Engineering for System Reliability

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  1. Human Factor Engineering ECE 796/896

  2. What is it ? • ergonomics - Human Factors • Human -Machine systems • Example: “ Error by Design”

  3. Human-Machine system

  4. Human-Machine Systems • Manual Systems • Mechanical systems • Automated Systems

  5. Human-Machine System • Components • Sensing • Information Storage • Information Processing • Action functions • Components interact to achieve system objective

  6. Systems • Inputs - Outputs • Open - Closed Loop • Reliability - MTF - series/parallel

  7. Systems • Purposeful • Can be Hierarchical • Operate in an Environment

  8. Reliability • Series - together & interdependently • one failure = system failure • failures are independent • Max. system reliability = least reliable component. In reality most systems are less reliable than the worst component. Ex: 100 components, each .99 = system .365

  9. Reliability • Parallel: Components in parallel do the same function. They provide a backup for each other. Adding components increases reliability. • EX: 4 components in parallel, each is .70 , the system is .992.

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