Answer / biswarup das

A lead-lag compensator is a component in a control system
that improves undesirable frequency response in a feedback
and control system. It is a fundamental building block in
classical control theory.

We are using it in varied discipline such as robotics,
satellite control, automobile diagnostics, laser frequency
stabilization and many more. It can also be used in digital
control.

Answer / prabudas

Compensator is used to compensate the deficiency in the performance of plant.
A lead compensator is used to improve the transient response and the steady state response is partially improved.
A lag compensator is used to improve the steady state response and the transient response is partially improved.
If we need a better transient response we should choose lead compensator.
If we need a better steady state response we should choose lag compensator.
If we need both transient response and steady state response we should choose lead lag compensator.

Answer / parmar.ic@gmail,com

THe lead compasator is suitable for systems having
unsatisfactory transient response but it provides only a
limited improvment in steady state response
lag compasator is suitable for systems having
unsatisfactory transisnt response but it provides only a
limited improvment in steady state response.
lead lag compensator is used in unstable system to convert
the stable system .

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