setlinio
Save linear analysis points to Simulink model, Linear Analysis Plots block, or Model Verification block
Description
Examples
Set Analysis Points in Simulink Model
Open Simulink model.
model = 'magball';
open_system(model)
Create a vector of analysis points for linearizing the plant model:
Input perturbation at the output of the Controller block
Open-loop output at the output of the Magnetic Ball Plant block
io(1) = linio('magball/Controller',1,'input'); io(2) = linio('magball/Magnetic Ball Plant',1,'openoutput');
Write the analysis points to the magball
model.
setlinio(model,io);
The analysis points in io
are added to the model as annotations. You can then save the model to store the analysis points with the model.
Set Analysis Points in Linear Analysis Plots Block
Open Simulink model.
open_system('scdcstr')
Create analysis points for finding the transfer function between the coolant temperature and the residual concentration.
Input perturbation at the output of the Coolant Temp block
Output measurement at the CA output of the CSTR block
io(1) = linio('scdcstr/Coolant Temp',1,'input'); io(2) = linio('scdcstr/CSTR',2,'output');
Set the analysis points in the Bode Plot block.
setlinio('scdcstr/Bode Plot',io);
View the analysis points in the Bode Plot Block Parameters dialog box.
open_system('scdcstr/Bode Plot')
During simulation, the software linearizes the model using the specified analysis, and plots the magnitude and phase responses for the resulting linear system.
Save Old Analysis Points When Storing New Analysis Points
Open Simulink model.
mdl = 'scdpwm';
open_system(mdl)
This model is configured with analysis points for finding the combined transfer function of the PWM and plant blocks.
Create analysis points for finding the transfer function of just the plant model.
io(1) = linio('scdpwm/Voltage to PWM',1,'input'); io(2) = linio('scdpwm/Plant Model',1,'output');
Store the analysis points to the model, and save the previous analysis point configuration.
oldio = setlinio(mdl,io)
2x1 vector of Linearization IOs: -------------------------- 1. Linearization input perturbation located at the following signal: - Block: scdpwm/Step - Port: 1 2. Linearization output measurement located at the following signal: - Block: scdpwm/Plant Model - Port: 1
Input Arguments
mdl
— Simulink model name
character vector | string
Simulink model name, specified as a character vector or string. The model must be in the current working folder or on the MATLAB® path.
If the model is not open or loaded into memory, setlinio
loads
the model into memory.
io
— Analysis point set
linearization I/O object | vector of linearization I/O objects
Analysis point set, specified as a linearization I/O object or a vector of linearization I/O objects.
Each linearization I/O object has the following properties:
Property | Description |
---|---|
Active | Flag indicating whether to use the analysis point for linearization, specified as one of the following:
|
Block | Full block path of the block with which the analysis point is associated, specified as a character vector. |
PortNumber | Output port with which the analysis point is associated, specified as an integer. |
Type | Analysis point type, specified as one of the following:
For more information on analysis point types, see Specify Portion of Model to Linearize. |
BusElement | Bus element name with which the analysis point is associated,
specified as a character vector or |
Description | User-specified description of the analysis point, which you can set for convenience, specified as a character vector. |
blockpath
— Linear Analysis Plots block or Model Verification block
character vector | string
Linear Analysis Plots block or Model Verification block, specified as a character vector or string that contains its full block path. The model that contains the block must be in the current working folder or on the MATLAB path.
For more information on:
Linear analysis plot blocks, see Visualization During Simulation.
Model verification blocks, see Model Verification.
Output Arguments
oldio
— Old analysis point set
linearization I/O object | vector of linearization I/O objects
Old analysis point set, returned as a linearization I/O object or a vector of linearization I/O objects.
Alternative Functionality
Simulink Model
You can also specify analysis points directly in a Simulink model. For more information, see Specify Portion of Model to Linearize in Simulink Model.
Version History
Introduced before R2006a
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