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cloop

Feedback connection of multiple models.

Syntax

model = cloop(sys)

model = cloop(sys, sign)

model = cloop(sys, outputs, inputs)

Input argument

sys: LTI model.
sign: Type of feedback: -1 (default) or +1.
outputs: vector indexes into the outputs.
inputs: vector indexes into the inputs.

Output argument

sys: Closed-loop system.

Description

cloop forms the closed-loop system when unity feedback is used.

This function is deprecated and has limitations, please see feedback. It is only applicable when the block in the feedback path is unity. Furthermore, its usage is restricted to system models expressed solely in transfer function form, and not in the more general "system".

Example

m = 1000;
b = 50;
u = 500;
A = [0 1; 0 -b/m];
B = [0; 1/m];
C = [0 1];
D = 0;
OUTPUTS = -1;
INPUTS = 1;
sys = ss(A, B, C, D);

R = cloop(sys, OUTPUTS, INPUTS)

History

Version	Description
1.0.0	initial version

Author

Allan CORNET