A simple method for robust control design, application on a non-linear and delayed system: engine torque control

摘要

This paper presents a simple method for designing a robust controller which can be used on uncertain and non-linear systems. As an extension of the method, the case of delayed systems is examined. The successive steps of the method are: non-linearity analysis and description, system linearization and identification, operating model design by minimization of a weighted frequencies criteria, model uncertainty design, PI and LQ controller design with robust property verification. A Smith predictor is included in the global control scheme to take the delay of the system into account. The application is a design of a robust controller for engine torque control.