SELECT AUTOMATIONS

Why PID Controller with an example?

To understand the process clearly we can take the following example of cruise (speed) control in a car,

·       Let’s see how we can control the speed of the car with some assumptions.

·       The speed of the car depends on how hard you press the accelerator.

·       For example say your car should have a automated control specifying that you should drive a speed between 40Kmph and 60 Kmph in a highway.

·       We can control this using a PID controller. Generally the input values are accelerator, your force on the accelerator and output is the speed control of a car.

But for the system the main inputs are P value, I value, D value, and set points and output to control the speed. Now watch carefully what happens