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view main/control/feedback.m @ 0:6b33357c7561 octave-forge
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author | pkienzle |
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date | Wed, 10 Oct 2001 19:54:49 +0000 |
parents | |
children | 7c7be07e7805 |
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## feedback(sys1,sys2) ## _____________ ## + | | ## u --->0----->| sys1 |-------> ## |- |____________| | ## | | ## | _____________ | ## | | | | ## -------| sys2 |---- ## |____________| ## ## This only works for SISO systems. ## Author: Ben Sapp <mailto:bsapp@lanl.gov> function out = feedback(sys1,sys2) if (nargin != 2) error("only 2 arguements accepted"); endif if(!is_siso(sys1) || !is_siso(sys2)) error("only single input single output systems supported"); endif T = sysgroup(sys1,sys2); T = sysdup(T,2,[]); T = sysscale(T,diag([1,1,-1]),[]); T = sysconnect(T,3,1); T = sysconnect(T,1,2); out = sysprune(T,1,1); endfunction