18 min

Beginner

Video

Theory

Link to External Site

When analyzing feedback systems, we can get caught up thinking solely about the relationship between the reference signal and the output. However, to fully understand how a feedback system behaves, we actually need to look at four different transfer functions. And if our system has a feedforward path, then this expands to six – the so-called gang of six transfer functions. The goal of this video is to provide a little intuition around why we need to look at more than just a single transfer function to fully capture the properties of the system.