Robust PID Control and Lead-Lag Compensation for Linear Interval Systems

Abstract

This paper introduces some recently developed frequency domain design techniques that are effective in the design of control systems that are robust under parametric uncertainty. We have extended the well known classical control tools (i.e., Nyquist plot, Bode plot, and Nichols chart) developed for a fixed plant to the domain of uncertain interval plants. Using this new family of plots, classical control design techniques can be used to design robust control systems.