Repeat using a lag-lead compensator instead of a PID

Chapter 9, Problem 48

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QUESTION:

Repeat Problem 47 using a lag-lead compensator instead of a PID controller. Design for a steady-state error of 1% for a step input command.

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QUESTION:

Repeat Problem 47 using a lag-lead compensator instead of a PID controller. Design for a steady-state error of 1% for a step input command.

ANSWER:

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a.

The root locus for the uncompensated system is shown in next. The range for closed loop stability is . The fastest system will occur for very small value of with . The dominant pole have a damping factor .

ace-22-8.PNG

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