Analyze Designs Using Response Plots

This example shows how to analyze your control system designs using the plotting tools inControl System Designer. There are two types ofControl System Designerplots:

Analysis plots — Use these plots to visualize your system performance and display response characteristics.
Editor plots — Use these plots to visualize your system performance and interactively tune your compensator dynamics using graphical tuning methods.

Analysis Plots

Use analysis plots to visualize your system performance and display response characteristics. You can also use these plots to compare multiple control system designs. For more information, seeCompare Performance of Multiple Designs.

To create a new analysis plot, inControl System Designer, on theControl Systemtab, clickNew Plot, and select the type of plot to add.

In the new plot dialog box, specify an existing or new response to plot.

Note

Using analysis plots, you can compare the performance of multiple designs stored in theData Browser. For more information, seeCompare Performance of Multiple Designs.

Plot Existing Response

To plot an existing response, in theSelect Response to Plotdrop-down list, select an existing response from theData Browser. The details for the selected response are displayed in the text box.

To plot the selected response, clickPlot.

Plot New Response

To plot a new response, specify the following:

Select Response to Plot— Select the type of response to create.
- New Input-Output Transfer Response— Create a transfer function response for specified input signals, output signals, and loop openings.
- New Open-Loop Response——创建一个开环传递函数响应t a specified location with specified loop openings.
- New Sensitivity Transfer Response— Create a sensitivity response at a specified location with specified loop openings.
Response Name— Enter a name in the text box.
Signal selection boxes — Specify signals as inputs, outputs, or loop openings by clicking. If you openControl System Designer来自:
- MATLAB^®— Select a signal using theArchitectureblock diagram for reference.
- 金宝app^®— Select an existing signal from the current control system architecture, or add a signal from the Simulink model.
Use,, andto reorder and delete signals.

To add the specified response to theData Browserand create the selected plot, clickPlot.

Editor Plots

Use editor plots to visualize your system performance and interactively tune your compensator dynamics using graphical tuning methods.

To create a new editor plot, inControl System Designer, on theControl Systemtab, clickTuning Methods, and select one of theGraphical Tuningmethods.

For examples of graphical tuning using editor plots, see:

For more information on interactively editing compensator dynamics, seeEdit Compensator Dynamics.

Plot Characteristics

On any analysis plot inControl System Designer:

To see response information and data values, click a line on the plot.
To view system characteristics, right-click anywhere on the plot, as described inFrequency-Domain Characteristics on Response Plots.

Plot Tools

Mouse over any analysis plot to access plot tools at the upper right corner of the plot.

and— Zoom in and zoom out. Click to activate, and drag the cursor over the region to zoom. The zoom icon turns dark when zoom is active. Right-click while zoom is active to access additional zoom options. Click the icon again to deactivate.
— Pan. Click to activate, and drag the cursor across the plot area to pan. The pan icon turns dark when pan is active. Right-click while pan is active to access additional pan options. Click the icon again to deactivate.
— Legend. By default, the plot legend is inactive. To toggle the legend on and off, click this icon. To move the legend, drag it to a new location on the plot.

To change the way plots are tiled or sorted, click and drag the plots to the desired location.

Design Requirements

You can add graphical representations of design requirements to any editor or analysis plots. These requirements define shaded exclusion regions in the plot area.

Use these regions as guidelines when analyzing and tuning your compensator designs. To meet a design requirement, your response plots must remain outside of the corresponding shaded area.

To add design requirements to a plot, right-click anywhere on the plot and selectDesign Requirements>New.

In the New Design Requirement dialog box, specify theDesign requirement type, and define the设计要求参数. Each type of design requirement has a different set of parameters to configure. For more information on adding design requirements to analysis and editor plots, seeDesign Requirements.