That's literally what the whole thing is about - you model a problem as a bunch of cybernetics/control theory equations (with or without helper diagrams of boxes and arrows), do some computing on it, and implement the result in the physical world. In many cases, the computational model is partially included in the result itself - the physical control system includes a computer (whether it's an analog or digital one) that keeps the physical system stable by means of computation, i.e. "simply a matter of computing".

(In general, I feel many people didn't get the memo: "computing" isn't something "techbros" do; computing is a fundamental part of how we understand the world works - up there with energy conservation, thermodynamics, etc.)