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Feedback connection command explaination

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AR
AR on 16 Apr 2020
Commented: AR on 24 Apr 2020
hello, its a command from Kalman filter help example,
SimModel = feedback(sys,1,4,2,1); % Close loop around input #4 and output #2
i want to ask what is the meaning of feedback(sys,1,4,2,1) command? there is conenction of input#4 with output#2, but what are 1's one the both sides of 4 and 2?

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Accepted Answer

Anish Mitra
Anish Mitra on 24 Apr 2020
The first 1 is the feedback system (a static gain of 1), and the last 1 is indicating positive feedback.

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