ANALYSIS OF THE ROBUSTNESS MARGIN OF SISO CONTROL-SYSTEMS WITH PLANT PARAMETRIC UNCERTAINTY

In this work a recently developed robustness margin index is used for analysis of typical single input single output (SISO) control systems with plant parametric uncertainty. This easily computed index is very useful in that it considers the magnitude of the errors in the plant p arameters explicitly rather than implicitly as is done with other exis ting techniques such as the open loop frequency response gain and phas e margins, The usefulness of this robustness margin index is underline d bsi the three treated examples.