Specifications

Design Controller in Simulink

5-3

• CSTR Temperature — Temperature of the limiting reactant in the product stream.

• Concentration — Concentration of the limiting reactant in the product stream, also

referred to as residual concentration. The MPC controller regulates this state to

satisfy the desired setpoint.

MPC Controller

The MPC Controller block, which requires a supported C or C++ compiler, represents the

model predictive controller. It is available in the Model Predictive Control Toolbox

library of the Simulink Library Browser. For this example, the block is configured as

follows:

• Measured output (mo inport) — Residual concentration; signal originating at the CA

outport of the CSTR block.

• Reference, also referred to as setpoint or target (ref inport) — Residual concentration

reference; signal originating at the Concentration Setpoint block. Set to 2 kmol/m

• Manipulated variable (mv outport) — Concentration of the CSTR coolant; input signal

of the Tc inport of the CSTR block.

The reactor temperature is usually controlled. For this example, ignore the reactor

temperature for a more challenging nonlinear control problem.

Open MPC Design Tool

Double-click the MPC Controller block to open the block dialog box.