How Does Open-Loop Control Systems | Understanding Control Systems, Part 1 Work?

An open-loop control system is like giving your friend a list of steps to follow, no questions asked, no check-ins.

Imagine you're baking cookies. You tell your friend, “Put the oven on 350°F and bake for 12 minutes.” That’s an open-loop system, you give instructions, and your friend follows them without checking if the cookies are done or if the oven is working properly. No feedback, just action.

Think of it like a robot on a conveyor belt. You tell it “Move forward 10 steps.” It counts each step, 1, 2, 3... all the way to 10, and stops. It doesn’t look back or check if it got distracted by a shiny ball. That’s how an open-loop control system works: it follows orders exactly as given.

In this kind of system, there's no “How’s that going?” or “Did you finish?” It just does what it was told, no thinking, no adjusting. That makes things simple and fast, but also means mistakes can happen if something goes wrong along the way.

Like your friend burns the cookies because they forgot to turn on the oven. No worries, that’s part of the fun!