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Phase lead compensation
  • a)
    increases bandwidth and increases steady-state error
  • b)
    decreases bandwidth and decreases steady-state error
  • c)
    will not affect bandwidth but decreases steady-state error
  • d)
    increases bandwidth but will not affect steady-state error
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Phase lead compensationa)increases bandwidth and increases steady-stat...
Lead compensator:
Transfer function:
If it is in the form of  then a < 1
If it is in the form of then a > b
Maximum phase lag frequency: ωm = 1√Ta
Maximum phase lag::

ϕm is positive
Pole zero plot:
The zero is nearer to the origin.
Filter: It is a high pass filter (HPF)
Effect on the system:
  • Rise time and settling time decreases and Bandwidth increases
  • The transient response becomes faster
  • The steady-state response is not affected
  • Improves the stability
  • The velocity constant is usually increased
  • Helps to increase the system error constant though to a limited extent
  • The slope of the magnitude curve is reduced at the gain crossover frequency, as a result, relative stability improves
  • The margin of stability of a system (phase margin) increased
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Phase lead compensationa)increases bandwidth and increases steady-state errorb)decreases bandwidth and decreases steady-state errorc)will not affect bandwidth but decreases steady-state errord)increases bandwidth but will not affect steady-state errorCorrect answer is option 'D'. Can you explain this answer?
Question Description
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