Characteristics of Systems

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Presentation transcript:

Characteristics of Systems Systems are Purposive Systems can be Hierarchical Systems operate in an Environment Components serve Functions

Basic Functions of Components Sensing ( information receiving ) Information Storage Information Processing and Decision Action Functions Physical control action Communication action

Closed-loop system vs. Open-loop system Requires continuous control Open-loop system When activated, needs no further control

System Reliability Probability of successful performance MTF ( Mean Time to Failure ) MTBF ( Mean Time Between Failures )

Series System vs. Parallel System Components in Series Rsys=R1*R2*． ． ． ． * Rn Components in Parallel Rsys=1-(1-R1)(1-R2) ． ． (1- Rn )

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