Simulink Control Design™ - MathWorks

The following table lists some common ways of specifying parameter samples.

Parameter Sample-Space Type How to Specify the Parameter Samples

Linearly varying param.Value =

linspace(A_min,A_max,num_samples)

Logarithmically varying param.Value =

logspace(A_min,A_max,num_samples)

Random param.Value = rand(1,num_samples)

Custom param.Value = custom_vector

If the variable used by the model is not a scalar variable, specify the parameter name as

an expression that resolves to a numeric scalar value. For example, suppose that Kpid is

a vector of PID gains. The first entry in that vector, Kpid, is used as a gain value in a

block in your model. Use the following commands to vary that gain using the values given

in a vector Kpvals:

param.Name = 'Kpid(1)';

param.Value = Kpvals;

After you create the structure param, pass it to findop as the param input argument.

Multidimension Parameter Grids

When you vary more than one parameter at a time, you generate parameter grids of

higher dimension. For example, varying two parameters yields a parameter matrix, and

varying three parameters yields a 3-D parameter grid. Consider the following parameter

grid used for batch trimming:

1 Steady-State Operating Points