**10+ How To Sketch Root Locus
Background**. In control theory and stability theory, root locus analysis is a graphical method for examining how the roots of a system change with variation of a certain system parameter. Kg (s)h(s) = f (s)) would start at the three nite poles and go towards the zeros at innity.

This lecture discusses several examples on sketching root locus in undergraduate controls course (me 352 @ sdsmt). Assume you have a unity feedback system as follows: Rules for construction of root locus.

### Electrical engineering q&a library sketch the root locus for the following loop transfer functions when 0 < k.

In this handout we showed how to determine the location of the poles of a control system through a root locus plot. Say our design criteria are 5% overshoot and 1 second rise time. This is a matlab tool that describes the process of creating a root locus diagram by hand for a user supplied transfer function. Although all academia are full of a plethora of software for drawing the root locus still it is fascinating for all learners of engineering to know the conceptual sketch of this method.