Where is Root Locus Technique used ?

[pixel]

Root Locus Technique

Is Root Locus Technique used only for systems with unity gain in feedback loop?

 

[usernam]

Re: Root Locus Technique

Not necessarily.
You can apply the root locus technique to a system with a feedback gain of H which may not be unity.
To draw the root locus you just have to make the open loop transfer function equal to -1 (for negative feedback) and 1 (for positive feedback).

 

[JoseLeonardo]

Root Locus Technique

Not, the root locus can be used in all linear systems.

 

[electron_boy]

Re: Root Locus Technique

not necessarily unity feed back system . it is the method used to plot the locus of the poles or zeros of a system when the gain is varied.

 

[bittware]

Re: Root Locus Technique

Not necessary.
A non unit gain feedback is equivalent to a unit gain feedback with serialized 1/H block at its output. H is the original non unit gain in feedback path.

 

[djalli]

Re: Root Locus Technique

Is Root Locus Technique used only for systems with unity gain in feedback loop?

gain varies from zero to infinity

 

[checkmate]

Re: Root Locus Technique

The very definition of the root locus is the path formed by closed-loop poles as gain varies.

 

[sabari]

Root Locus Technique

no root locus technique can be evaluated for linear systems whose loop gain varies from zero to infinity
but loop must be closed .