User`s guide

LQG Regulation
9-31
LQG Regulation
This case study demonstrates the use of the LQG design tools in a process
controlapplication.Theg oal istoregulatethe horizontalandverticalthickness
of the beam produced by a hot steel rolling mill. This example is adapted from
[1]. The full plant model is M IMO and the example shows the advantage of
direct MIMO LQG design over separate SISO designs for each ax is. Type
milldemo
at the command line to run t his demonstration interactively.
Process and Disturbance Models
The rolling mill is used to shape rectangular beams of hot metal. The desired
outgoing shape is sketched below.
rolling cylinders
shaped beam
x
y