9. You are asked to design a control system for a plant with the transfer function 12 (s+1)(s+2)(s+5) G(s) = The customer wants a maximum percentage overshoot of 0.75%, and a settling time of 1.5 s. (a) Determine the closed loop pole locations that correspond to the customer's specification. (b) Design a PD controller that will produce the pole locations in part a. (c) Draw the root locus of your system with the controller applied (grid provided on next page) (d) Determine the steady state error to the appropriate input (step, ramp, parabola) with your choice of PD controller. (e) If the customer needs better steady state error performance than that provided by your controller, should you increase the gain or decrease the gain? Explain (f) If you change the gain according to your answer in part e, what will happen to the control performance? Which specifications will still be met with the increased (decreased) gain and which won't?

9. You are asked to design a control system for a plant with the transfer function 12 (s+1)(s+2)(s+5) G(s) = The customer wants a maximum percentage overshoot of 0.75%, and a settling time of 1.5 s. (a) Determine the closed loop pole locations that correspond to the customer's specification. (b) Design a PD controller that will produce the pole locations in part a. (c) Draw the root locus of your system with the controller applied (grid provided on next page) (d) Determine the steady state error to the appropriate input (step, ramp, parabola) with your choice of PD controller. (e) If the customer needs better steady state error performance than that provided by your controller, should you increase the gain or decrease the gain? Explain (f) If you change the gain according to your answer in part e, what will happen to the control performance? Which specifications will still be met with the increased (decreased) gain and which won't?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter22: Sequence Control

Section: Chapter Questions

Problem 1SQ: Describe what is meant by sequence control.

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