PID control is like something that helps a machine run smoothly and on track. Think of it like a king or queen that makes sure everything is running smoothly.
A PID controller is a special type of computer software that helps machines like cars, microwave ovens, or robots stay on track by making sure they do what you want them to do. It does this by adjusting the amount of power that goes to the machine to keep it on the right track.
The PID controller works like this: it looks at the machine and tells it how it should be doing something. For example, if you want the car to drive a certain speed, the PID controller will tell the car how much power it needs to use to make sure it reaches the right speed. It will also look at the speed the car is going and make sure the car is staying on track - it will adjust the power the car uses to make sure the car is always in the right place.
The letters in 'PID' stand for 'Proportional, Integral, and Derivative'. Proportional means that the more a machine is off track, the more the PID controller will adjust it to make sure it's doing the right thing. Integral means that the PID controller will look at what has happened in the past and make sure it does the right thing in the future. Derivative means that the PID controller will use this information to figure out how quickly it needs to change the power to make sure the machine is always on track.
In summary, PID control is like a special kind of computer that helps machines like cars, microwaves, and robots stay on track and running smoothly by adjusting their power levels to make sure they are always doing what you want them to do.