Control systems expert -- 2

I need help with my control project (Design nonlinear controllers)
I already did it but it needs correction and improvements
1-Select a Nonlinear System ( hydro turbine governing system)
2-find the equilibrium point (found zeros )and error system
3-Design controller such as SFC ,LQR ,sliding mode , back stepping and feedback linearization controller
(ALL controllers I tried to make a design and all the steps I typed them down but I need help to correct some of them and improve the correct one