A comparison of several techniques for designing controllers of uncertain dynamic systems

In recent years, a number of techniques have been developed for the design of linear, constant gain feedback controllers for systems with imprecisely Known parameters. In this paper, several of these techniques are compared in the context of the design of a lateral autopilot for a rudderless remotely piloted vehicle with uncertain aerodynamic coefficients. Properties of the design techniques on which the comparison is based include closed-loop system performance at nominal and off-nominal parameter values, computational cost and complexity, ease of implementation in a real system, and generality of the parameter uncertainty which can be dealt With.