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Consider the following statements regarding timedomain analysis of a control system :
1. Derivative control improves system’s transient performance
2. I ntegral control does not improve system’s steady state performance
3. I ntegral control can convert a second order system into a third order system
Of these statements
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- 1 and 2 are correct
- 1 and 3 are correct
- 2 and 3 are correct
- 1, 2 and 3 are correct
Correct Option: B
For same KV, the natural frequency ωn remains unchanged in derivative control while damping is increased.
Thus it improves the transient response.
Integral compensator introduces a term 1/s, thus changes second order to third order.
