Simulink® Control Design™

Compensator Design Quick Start

To quickly get started designing compensators, follow these steps. The documentation gives additional information for each step in the process and describes the advanced functionality of the product.

1. Create or open a Simulink^® model. See Creating or Opening a Simulink^® Model for more information.

2. Open a compensator design task for this model by selecting Tools > Control Design > Compensator Design from the model window. The compensator design task opens in the Control and Estimation Tools Manager. See Beginning a Compensator Design Task for more information.

3. Within the Tunable Blocks pane of the Simulink Compensator Design Task node, click the Add Blocks button to select the blocks in your model whose parameters you want to tune. These are typically the compensators in your model. See Picking Blocks to Tune for more information.

4. Within the Closed-Loop Signals pane, select the closed-loop system(s) whose response(s) you want to design. A closed-loop system is defined by an input point, such as a reference or disturbance signal, and an output point, such as a measured output or actuator signal.

   To define the closed-loop signals, insert linearization input and output points on the model diagram. Right-click a signal line and select Linearization Points, and then select either Input Point or Output Point depending on whether you want the signal to be an input or output for the closed-loop system. See Selecting Closed-Loop Responses to Design for more information.

5. Within the Operating Point pane, select the operating point to linearize the model about when designing the compensators. To create a new operating point, click the New Operating Point button. See Specifying Operating Points for more information and for methods of specifying operating points.

6. Click the Tune Blocks button to open the Design Configuration Wizard which guides you through the selection and configuration of the open- and closed-loop systems you want to tune, and the design and analysis plots you want to use for this task. See Creating a SISO Design Task for more information.

7. After completing the Design Configuration Wizard, a SISO Design Task node is created in the Control and Estimation Tools Manager. The SISO Design Task includes several tools for tuning the response of SISO systems:

   • A graphical editing environment in the SISO Design Tool window that contains the design plots you configured in the Design Configuration Wizard

   • An LTI Viewer window where you can view the time and frequency analysis plots that you configured in the Design Configuration Wizard

   • A compensator editor where you can directly edit the block mask parameters or the poles and zeros of compensators in your system

   • A tool that automatically generates compensators using PID, internal model control (IMC), or linear-quadratic-Gaussian (LQG) methods (uses the Control System Toolbox™ software)

   • A response optimization tool that automatically tunes the system to satisfy design requirements (available when you have the Simulink^® Response Optimization™ software)

   See Completing the Design for more information on designing compensators with the SISO Design Task node.

8. From the SISO Design Task node, click the Design node under the Design History node. Then click the Update Simulink Block Parameters button to write your tuned parameter values back to the Simulink model. See Writing the Design to the Simulink^® Model for more information.

Linearization Quick Start

Beginning a Project