Cybernetics is the original "control systems math", which was then forgotten/ignored in the West (the Soviets messed with it some I think) and re-invented as "Control Theory" by people trying to control factories and such.

As the article states, Cybernetics as originally conceived makes no distinctions about the physical (or otherwise) nature of the underlying processes it models, and it was explicitly expected to unify the math of feedback and control in biological as well and mechanical systems.

The fictional "Bionic Man", et. al., was an exploration in the popular imagination of how this might result in e.g. artificial limbs and organs that worked like the real thing and, in the stories at least, even improved on them.

In any event, what this article describes could be called cellular bionics.