Specifications

LQG Regulation: Rolling Mill Example
10-31
LQG Regulation: Rolling Mill Example
This case study demonstrates the use of the LQG design tools in a process
controlapplication.Thegoalistoregulatethehorizontaland verticalthickness
of the beam produced by a hot steel rolling mill. This example is adapted from
[1]. The full plant model is MIMO and the example shows the advantage of
direct MIMO LQG design over separate SISO designs for each axis. Type
milldemo
at the command line to run this 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