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Analyze Results With Linear Analysis Tool Response Plots

This topic explains ways to use and manipulate response plots of linearized systems in Linear Analysis Tool.

View System Characteristics on Response Plots

To view system characteristics such as stability margins, overshoot, or settling time on a Linear Analysis Tool response plot, Right-click the plot and select Characteristics Then select the system characteristic you want to view.

For most characteristics, a data marker appears on the plot. Click the marker to show a data tip that contains information about the system characteristic.

Generate Additional Response Plots of Linearized System

In Linear Analysis Tool, when you have linearized or estimated a system, generate additional response plots of the system as follows:

  1. In the Linear Analysis Tool, click the Plots and Results tab. In the Linear Analysis Workspace or the MATLAB® Workspace, select the system you want to plot.

  2. In the Plots section of the tab, click the type of plot you want to generate.

      Tip   Click to expand the gallery view.

Linear Analysis Tool generates a new plot of type you select.

    Tip   To multiple plots at the same time, select a layout in the View tab.

Add Linear System to Existing Response Plot

New Linear System

When you compute a new linearization or frequency response estimation, in the Linear Analysis tab, click the button corresponding to an existing plot to add the new linear system to that plot.

For example, suppose that you have linearized a model at the default operating point for the model, and have a step plot of the result, Step Plot 1. Suppose further that you have specified a new operating point, a linearization snapshot time. To linearize at the new operating point and add the result to Step Plot 1, click Step Plot 1. Linear Analysis Tool computes the new linearization and adds the step response of the new system, linsys2, to the existing step response plot.

Linear System in Workspace

There are two ways to add a linear system from the MATLAB Workspace or the Linear Analysis Workspace to an existing plot in the Linear Analysis Tool.

  • Drag the linear system onto the plot from the MATLAB Workspace or the Linear Analysis Workspace.

  • On the Plots and Results tab, in the Linear Analysis Workspace, select the system you want to add to an existing plot. Then, in the Plots section of the tab, select the button corresponding to the existing plot you want to update.

    For example, suppose that you have a Bode plot of the response of a linear system, Bode Plot 1. Suppose further that you have an estimated response in the Linear Analysis Workspace, estsys1. To add the response of estsys1 to the existing Bode plot, select estsys1 and click Bode Plot 1.

      Tip   Click to expand the gallery view.

Customize Characteristics of Plot in Linear Analysis Tool

To change the characteristics of an existing plot, such as the title, axis labels, or text styles, double-click the plot to open the properties editor. Edit plot properties as desired. Plots are updated as you make changes. Click Close when you are finished.

Print Plot to MATLAB Figure in Linear Analysis Tool

To export a plot from the Linear Analysis Tool to a MATLAB figure window:

  1. Select the plot you want to export. A tab appears with the same name as the plot.

  2. Click the new tab. In the Print section, click Print to Figure.

    A MATLAB figure window opens containing the plot.

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