Implement discrete-time state space
Additional Math & Discrete / Additional Discrete
The Fixed-Point State-Space block implements the system described by
whereuis the input,xis the state, andyis the output. Both equations have the same data type.
The matrices A, B, C and D have the following characteristics:
A must be an n-by-n matrix, where n is the number of states.
B must be an n-by-m matrix, where m is the number of inputs.
C must be an r-by-n matrix, where r is the number of outputs.
D must be an r-by-m matrix.
In addition:
The state x must be an n-by-1 vector.
The input u must be an m-by-1 vector.
The output y must be an r-by-1 vector.
The block accepts one input and generates one output. The block determines the input vector width by the number of columns in the B and D matrices. Similarly, the block determines the output vector width by the number of rows in the C and D matrices.
The Fixed-Point State-Space block accepts signals of the following data types:
Floating point
Built-in integer
Fixed point
For more information, seeData Types Supported by Simulinkin the Simulink®documentation.
Specify the matrix of states.
Specify the column vector of inputs.
Specify the column vector of outputs.
指定的矩阵直接引线。
Specify the initial condition for the state.
Specify the data type for internal calculations.
Specify the scaling for state equations.
指定输出的扩展方程。
Select to lock the output data type setting of this block against changes by the Fixed-Point Tool and the Fixed-Point Advisor. For more information, seeUse Lock Output Data Type Setting(Fixed-Point Designer).
Specify the rounding mode for fixed-point operations.For more information, seeRounding(Fixed-Point Designer).
Select to have overflows saturate to the maximum or minimum value that the data type can represent. Otherwise, overflows wrap.
When you select this check box, saturation applies to every internal operation on the block, not just the output or result. In general, the code generation process can detect when overflow is not possible. In this case, the code generator does not produce saturation code.
Data Types |
Double | Single | Boolean | Base Integer | Fixed-Point |
Direct Feedthrough |
Yes |
Multidimensional Signals |
No |
Variable-Size Signals |
Yes |
Zero-Crossing Detection |
No |
Code Generation |
Yes |