<< ss2tf

Control System functions

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ssdata

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Access state-space model data.

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Syntax

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[A, B, C, D] = ssdata(sys)

[A, B, C, D, Ts] = ssdata(sys)

Input argument

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sys

LTI model.

Output argument

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A

State matrix: Nx-by-Nx matrix.

B

Input-to-state matrix: Nx-by-Nu matrix.

C

State-to-output matrix: Ny-by-Nx matrix.

D

Feedthrough matrix: Ny-by-Nu matrix.

TS

Sample time: scalar.

Description

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The function ssdata(sys) retrieves the matrix data A, B, C, D from the state-space model (LTI array) represented by sys.

If sys is initially in the form of a transfer function or zero-pole-gain model (LTI array), it is automatically converted to the state-space representation before extracting the matrix data.

Example

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sysIn = ss([1 0;0 -2], [-1;0], [2 1], 0, 3.2); 
[a, b, c, d, Ts] = ssdata(sysIn)

See also

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tf, ss.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET