Adding noise to feedback in a transfer function

조회 수: 10 (최근 30일)
Myrtle42
Myrtle42 2015년 3월 5일
I would like to add Gaussian noise to a transfer function model, not at the input, but to the feedback term in the model. To simplify my system, lets say it is the prototypical closed loop http://en.wikipedia.org/wiki/Closed-loop_transfer_function with
Y/X = G/(1+G*H), where H represents negative feedback control block based on a measurement of the output.
I'd like to then use lsim to quantify the noise in the response to a sine wave input. How do I add 5% noise to the feedback signal, such that the noise is greater when there is greater mismatch between actual and desired signal? I.e. if Y is the output signal, I'd want to feedback Y' = Y*(1 + .1*randn(1)) at each point in time during a simulation. Is the only choice to implement the model numerical in discrete time?

답변 (0개)

카테고리

Help CenterFile Exchange에서 Classical Control Design에 대해 자세히 알아보기

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by