The following diagram shows three systems: System I is a positional servo system. System II is a positional servo system with PD control. System III is a positional servo system with velocity feedback.

Compare the unit-step, unit-impulse, and unit-ramp responses of the three systems. Which system is best with respect to the speed of response and maximum overshoot in the step response?

Transcribed Image Text:

R(s) 1 Y(s) 5 System I s(5s+1) R(s) 1 Y(s) 5(1+0.8s) s(5s+1) System II Y(s) R(s) 5 (5s+1) 0.8 System III Three Control Systems