As a specific example: it is used in control loops to accurately describe your system. If you have an accurate description it then becomes trivial to describe the PID controller to manage it. Going from open to closed loop is as simple as adding +1 to your equation for example.
As a specific example: it is used in control loops to accurately describe your system. If you have an accurate description it then becomes trivial to describe the PID controller to manage it. Going from open to closed loop is as simple as adding +1 to your equation for example.