Specifications

Table Of Contents

Time Delays

2-45

This creates the LTI model with the following transfer function.

Here is the entry of

Note State-space models with I/O delays have only a frequency-domain

interpretation. They cannot, in general, be described by state-space equations

with delayed inputs and outputs.

Distillation Column Example

Thisexampleisadaptedfrom[2]andillustratesthe useofI/Odelaysinprocess

modeling. The process of interest is the distillation column depicted by the

figure below. This column is used to separate a mix of methanol and water (the

feed)intobottom products (mostly water) and a methanol-saturated distillate.

()

–

()

exp

()

,()

()

DCsIA–

()

1–

B+=