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'.TipTo highlight any selected signal in the Simulink model, click. To remove a signal
from the input or output list, click. When you have selected multiple signals, you can
reorder them using and. For more information on how to specify signal locations
for a tuning goal, see “Specify Goals for Interactive Tuning” on page 10-39.
Weights
Use the Left weight WL and Right weight WR text boxes to specify the frequency-
weighting functions for the tuning goal. H(s) = WL(s)T(s)WR(s), where T(s) is the transfer
function from specified inputs to outputs.
WL provides the weighting for the output channels of H(s), and WR provides the weighting
for the input channels. You can specify scalar weights or frequency-dependent weighting.
To specify a frequency-dependent weighting, use a numeric LTI model whose magnitude
represents the desired weighting function. For example, enter tf(1,[1 0.01]) to
specify a high weight at low frequencies that rolls off above 0.01 rad/s.
Weighted Passivity Goal