Question: What are the restrictions on the feedforward transfer function G2(s) in the system of Figure P7.6 to obtain zero steady-state error for step inputs if:
What are the restrictions on the feedforward transfer function G2(s) in the system of Figure P7.6 to obtain zero steady-state error for step inputs if:
a. G1(s) is a Type 0 transfer function;
b. G1(s) is a Type 1 transfer function;
c. G1(s) is a Type 2 transfer function?

R(s) E(s) 20 C(s) G,(s) s(s+3) FIGURE P7.6
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