| Using Simulink | |
Block Parameters
Key properties of many standard blocks are parameterized. For example, the gain of the Simulink Gain block is a parameter. Each parameterized block has a block dialog that lets you set the values of the parameters when editing or simulating the model. You can use MATLAB expressions to specify parameter values. Simulink evaluates the expressions before running a simulation. You can change the values of parameters during a simulation. This allows you to determine interactively the most suitable value for a parameter.
A parameterized block effectively represents a family of similar blocks. For example, when creating a model, you can set the gain parameter of each instance of the Gain block separately so that each instance behaves differently. Because it allows each standard block to represent a family of blocks, block parameterization greatly increases the modeling power of the standard Simulink libraries.
Tunable Parameters
Many block parameters are tunable. A tunable parameter is a parameter whose value can change while Simulink is executing a model. For example, the gain parameter of the Gain block is tunable. You can alter the block's gain while a simulation is running. If a parameter is not tunable and the simulation is running, Simulink disables the dialog box control that sets the parameter. Simulink allows you to specify that all parameters in your model are nontunable except for those that you specify. This can speed up execution of large models and enable generation of faster code from your model. See Model parameter configuration for more information.
| | System Functions | Continuous Versus Discrete Blocks | |