The MATLAB Control Toolbox stores linear time invariant (LTI) models as objects. These objects can be manipulated (added, multiplied) to form more complex objects. Models can easily be transformed from one form to another (state space to transfer function, for example). Continuous models can also be transformed to discrete (and vice versa).
The sections of this module are as follows:
M4.1 Forming Continuous-Time Models
M4.2 Forming Discrete-Time Models
M4.3 Converting Continuous Models to Discrete
M4.4 Converting Discrete Models to Continuous
M4.5 Step and Impulse Responses
The majority of the functions that are used in this textbook are in Section M4.1.