Steady state error calculator

1. What is a steady-state error?
2. How do you find the steady-state error for step input?

What is a steady-state error?

A steady-state error is defined as the difference between the desired value and the actual value of a system when the response has reached the steady state. We can calculate the steady-state error of the system using the final value theorem.

How do you find the steady-state error for step input?

We can find the steady-state error due to a step disturbance input again employing the Final Value Theorem (treat R(s) = 0). When we have a non-unity feedback system we need to be careful since the signal entering G(s) is no longer the actual error E(s).