augstate

Append state vector to output vector

Syntax

asys = augstate(sys)

Description

asys = augstate(sys) appends the state vector to the outputs of a state-space model.

Given a state-space model sys with equations

$\begin{array}{l} \dot{x} = A x + B u \\ y = C x + D u \end{array}$

(or their discrete-time counterpart), augstate appends the states x to the outputs y to form the model

$\begin{matrix} \dot{x} = A x + B u \\ [\begin{array}{l} y \\ x \end{array}] = [\begin{array}{l} C \\ I \end{array}] x + [\begin{array}{l} D \\ 0 \end{array}] u \end{matrix}$

This command prepares the plant so that you can use the feedback command to close the loop on a full-state feedback u = −Kx.

Limitation

Because augstate is only meaningful for state-space models, it cannot be used with TF, ZPK or FRD models.

Version History

Introduced before R2006a

augstate

Syntax

Description

Limitation

Version History

See Also