Simulink Control Design™ - MathWorks

In Control System Tuner, the shaded area on the plot represents the region in the

frequency domain in which the tuning goal is not met. The plot shows the value of the R-

index described in “About Sector Bounds and Sector Indices” (Control System Toolbox).

Creation

In the Tuning tab of Control System Tuner, select New Goal > Conic Sector Goal.

Command-Line Equivalent

When tuning control systems at the command line, use TuningGoal.ConicSector to

specify a step response goal.

I/O Transfer Selection

Use this section of the dialog box to specify the inputs and outputs of the transfer

function that the tuning goal constrains. Also specify any locations at which to open loops

for evaluating the tuning goal.

• Specify input signals

Select one or more signal locations in your model as inputs to the transfer function

that the tuning goal constrains. To constrain a SISO response, select a single-valued

input signal. For example, to constrain the gain from a location named 'u' to a

location named 'y', click Add signal to list and select 'u'. To constrain the

passivity of a MIMO response, select multiple signals or a vector-valued signal.

• Specify output signals

Select one or more signal locations in your model as outputs of the transfer function

that the tuning goal constrains. To constrain a SISO response, select a single-valued

output signal. For example, to constrain the gain from a location named 'u' to a

location named 'y', click Add signal to list and select 'y'. To constrain the

passivity of a MIMO response, select multiple signals or a vector-valued signal.

• Compute input/output gain with the following loops open

Select one or more signal locations in your model at which to open a feedback loop for

the purpose of evaluating this tuning goal. The tuning goal is evaluated against the

open-loop configuration created by opening feedback loops at the locations you

identify. For example, to evaluate the tuning goal with an opening at a location named

'x', click Add signal to list and select 'x'.

10 Control System Tuning