Analysis of the Robustness Margin of SISO Control Systems with Plant Parametric Uncertainty

Abstract

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 parameters explicitly rather than implicitly as is done with other existing techniques such as the open loop frequency response gain and phase margins. The usefulness of this robustness margin index is underlined by the three treated examples.