Generalized ESO and Predictive Control Based Robust Autopilot Design

Author:

Panchal Bhavnesh1ORCID,Talole S. E.1ORCID

Affiliation:

1. Department of Aerospace Engineering, Defence Institute of Advanced Technology, Girinagar, Pune 411025, India

Abstract

A novel continuous time predictive control and generalized extended state observer (GESO) based acceleration tracking pitch autopilot design is proposed for a tail controlled, skid-to-turn tactical missile. As the dynamics of missile are significantly uncertain with mismatched uncertainty, GESO is employed to estimate the state and uncertainty in an integrated manner. The estimates are used to meet the requirement of state and to robustify the output tracking predictive controller designed for nominal system. Closed loop stability for the controller-observer structure is established. An important feature of the proposed design is that it does not require any specific information about the uncertainty. Also the predictive control design yields the feedback control gain and disturbance compensation gain simultaneously. Effectiveness of GESO in estimation of the states and uncertainties and in robustifying the predictive controller in the presence of parametric uncertainties, external disturbances, unmodeled dynamics, and measurement noise is illustrated by simulation.

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering,Computer Science Applications,Modelling and Simulation

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