12.2 System Modeling and Variable Identification

• Typical decision variables in systems include,

- mass

- volume

- power consumption

- component cost

- factor of safety

- signal-to-noise ratio

- transmission rates

- etc.

• A model of the system should relate the decisions to be made mathematically. These relationships oftem include performance measures,

- cutting speeds

- cycle times

- power

- capacity

- flow rates

- etc.