Old spec 3.3 example, steady state gain of a Transfer FunctionTutorialOld spec ENGR202Third3 min

ENGR202 (old spec) Control 3.3 Transfer Functions, another steady state gain example (slide 10)

A system has the Transfer Function model X(s)=s+12s2+6s+3U(s)X(s) = \frac{s + 12}{s^2 + 6s + 3}U(s) Find the steady state gain, and the steady state value of the output when the input is held constant at u=10u = 10.

Formulas you may need
  • Steady state gain: set s=0s = 0 in the Transfer Function; x(t→∞)=gain×u0x(t \to \infty) = \text{gain} \times u_0 for a constant input u0u_0 (stable system) (learn this)