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Control SystemsSteady-State Error

For G(s)=20/[s(s+4)] with unity feedback, the unit-ramp steady-state error is?

  • A0
  • B0.2
  • C4
  • D5
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Correct Answer: B. 0.2
Explanation: For a Type 1 system, ess=1/Kv=1/5=0.2.
Reference: Standard control systems: steady-state error
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