sminreal (Control Design and Simulation Module, MathScript Function)
Member of the reduce class.
Syntax
SysMinSS = sminreal(SysInSS)
Description
Calculates the minimal state realization of a state-space system model. This function calculates the minimal state realization based on unconnected (null) rows and columns in the controllability and observability matrices. This function only eliminates inputs or outputs when columns or rows of these matrices are below a tolerance, defined as 2E-16, even though the controllability and observability matrices might be rank deficient.
Inputs
| Name | Description |
| SysInSS | Specifies a linear time-invariant (LTI) model in state-space form. |
Outputs
| Name | Description |
| SysMinSS | Returns an LTI state-space model that is the minimal state realization of the SysInSS model. |
Examples
A = 0B = 0
C = 0
D = 1
SysInSS = ss(A, B, C, D)
SysMinSS = sminreal(SysInSS)