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feedback

PURPOSE

% feedback(sys1,sys2)

SYNOPSIS

function out = feedback(sys1,sys2)

DESCRIPTION

% feedback(sys1,sys2)
%
% Filter the output of sys1 through sys2 and subtract it from the input.
%
%              _____________
%     +        |            |
% u --->0----->|    sys1    |------->
%       |-     |____________|   |
%       |                       |
%       |      _____________    |
%       |      |            |   |
%       -------|    sys2    |----
%              |____________|
%
% This only works for SISO systems.

CROSS-REFERENCE INFORMATION

This function calls:

is_siso % Returns nonzero if the system data structure
sysconnect % Close the loop from specified outputs to respective specified inputs
sysdup % Duplicate specified input/output connections of a system
sysgroup % Combines two systems into a single system.
sysprune % Extract specified inputs/outputs from a system
sysscale % scale inputs/outputs of a system.

This function is called by: