Question

How can I design a proportional controller, that can have, if possible the next specifications? :...

How can I design a proportional controller, that can have, if possible the next specifications? :

*Buffer ratio: 0.7* , *Stationary error: 10% for a unit step* & *Stationary error: 10% for a unit ramp*.

For the following system: G(z)= 1/(z+0.9)(z-0.9)

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