MATLAB MODEL PREDICTIVE CONTROL TOOLBOX - S Dokumentacja Pobierz pdf (Strona 61)

Design Controller Using the Design Tool

3-11

• “Running a Simulation” on page 3-12

• “Open-Loop Simulations” on page 3-15

Defining Simulation Conditions

To define simulation conditions, select an existing scenario node or create a new one, and

then edit its tabular fields to define your conditions.

CSTR Temperature Setpoint Change Scenario shows the result of renaming the default

Scenario1 node to TSetpoint and editing its default conditions. The required editing

steps are as follows:

• Increase Duration from 10 to 30.

• Locate the tabular data defining the reactor temperature setpoint (first row of the

upper table in CSTR Temperature Setpoint Change Scenario).

• Click the Type table cell and select Step from the list of choices.

• Change Size from 1.0 to 2.

• Change Time from 1.0 to 5.

Note The Control Interval is a property of the controller being used (MPC1 in this

case). To change it, select the controller node in the tree, and then edit the value

on the Model and Horizons tab (see “Model and Horizons” on page 3-23).

Such a change would apply to all simulations involving that controller.

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MATLAB MODEL PREDICTIVE CONTROL TOOLBOX - S Dokumentacja Strona 61