Question :
The open loop transfer function of a plant is given as, G(s) =1/s^2-1. If the plant is operated in unity feedback configuration, then the lead compensator that can stabilize the control system is:
1. 10(s-1)/(s+2)
2. 10(s+4)/(s+2)
3. 10(s+2)/(s+10)
4. 10(s+2)/(s+10)
Answer :
1 - 10(s-1)/(s+2)
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