Creating and Manipulating Models    

Model Interconnection Functions

The Control System Toolbox provides a number of functions to help with the model building process. These include model interconnection functions to perform I/O concatenation ([,], [;], and append), general parallel and series connections (parallel and series), and feedback connections (feedback and lft). These functions are useful to model open- and closed-loop systems.

Interconnection Operator
Description
[,]
Concatenates horizontally
[;]
Concatenates vertically
append
Appends models in a block diagonal configuration
augstate
Augments the output by appending states
connect
Forms an SS model from a block diagonal LTI object for an arbitrary interconnection matrix
feedback
Forms the feedback interconnection of two models
lft
Produces the LFT interconnection (Redheffer Star product) of two models
parallel
Forms the generalized parallel connection of two models
series
Forms the generalized series connection of two models


  Pertransposition Concatenation of LTI Models