Feedforward Controls

Note

Integral control can eliminate steady-state error but could hurt stability

We can achieve the same effects by adding a feed forward control action…

Closed loop TF: $T\left(s\right)=\frac{Y\left(s\right)}{R\left(s\right)}=\frac{G_c\left(s\right)G_p\left(s\right)}{1+G_c\left(s\right)G_p\left(s\right)}$, if $G_p\left(s\right)$ is of type 9, and $G_c\left(s\right)$ doesn’t have any integral terms, its DC gain is as given except instead of functions of s, they are functions of 0…