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