Main Content

Interpreted MATLAB Function

ApplyMATLABfunction or expression to input

expand all in page
  • 库:

  • Simulink / User-Defined Functions

  • Interpreted MATLAB Function block

Description

TheInterpreted MATLAB Functionblock applies the specified MATLAB®function or expression to the input. The output of the function must match the output dimensions of the block.

一些有效的表达式block are:

sin atan2(u(1), u(2)) u(1)^u(2)

Note

This block is slow because it calls the MATLAB parser during each integration step. Consider using built-in blocks (such as the Math Function block) instead. Alternatively, you can write the function as a MATLAB S-function or MEX-file S-function, then access it using the S-Function block.

Ports

Input

expand all

TheInterpreted MATLAB Functionblock accepts one real or complex input of typedoubleand generates real or complex output of typedouble, depending on the setting of theOutput signal typeparameter.

Data Types:double

Output

expand all

TheInterpreted MATLAB Functionblock accepts one real or complex input of typedoubleand generates real or complex output of typedouble, depending on the setting of theOutput signal typeparameter.

Data Types:double

Parameters

expand all

Specify the function or expression. If you specify a function only, it is not necessary to include the input argument in parentheses.

Specify the dimensions of the block output signal, for example,2for a two-element vector. The output dimensions must match the dimensions of the value returned by the function or expression in theMATLAB functionfield.

Specify-1to inherit the dimensions from the output of the specified function or expression. To determine the output dimensions, Simulink runs the function or expression once before simulation starts.

Note

If you specify-1for this parameter and your function has persistent variables, then the variables might update before the simulation starts. If you need to use persistent variables, consider setting this parameter to a value other than-1.

Specify the output signal type of the block asreal,complex, orauto. A value ofautosets the output type to be the same as the type of the input signal.

Select this check box to output a 2-D array as a 1-D array containing the 2-D array's elements in column-major order.

Note

This parameter is not visible in the block dialog box unless it is explicitly set to a value other than-1. To learn more, seeBlocks for Which Sample Time Is Not Recommended.

Block Characteristics

Data Types

double

Direct Feedthrough

yes

Multidimensional Signals

no

Variable-Size Signals

no

Zero-Crossing Detection

no

See Also

|

Introduced in R2011a

Simulink Documentation

万博1manbetx

Model-Based Design for Embedded Control Systems

Model-Based Design for Embedded Control Systems

Download white paper