Simulink Control Design™ - MathWorks

Visualize Tuning Goals

When you tune a control system with systune or Control System Tuner, use tuning-goal

plots to visualize your design requirements against the tuned control system responses.

Tuning-goal plots show graphically where and by how much tuning goals are satisfied or

violated. This visualization lets you examine how close your control system is to ideal

performance. It can also help you identify problems with tuning and provide clues on how

to improve your design.

Tuning-Goal Plots

How you obtain tuning-goal plots depends on your work environment.

• At the command line, use viewGoal.


• In Control System Tuner, each tuning goal that you create generates a tuning-goal
  plot. When you tune the control system, these plots update to reflect the tuned design.

The form of the tuning-goal plot depends on the specific tuning goal you use.

Time-Domain Goals

For time-domain tuning goals, the tuning-goal plot is a time-domain plot of the relevant

system response. The following plot, adapted from the example “MIMO Control of Diesel

Engine” (Control System Toolbox), shows a typical tuning-goal plot for a time-domain

disturbance-rejection goal. The dashed lines represent the worst acceptable step

response specified in the tuning goal. The solid line shows the corresponding response of

the tuned system.

Visualize Tuning Goals