Optimal backstepping control for a ship using firefly optimization algorithm and disturbance observer

Author:

Ejaz Muhammad1,Chen Mou1

Affiliation:

1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, China

Abstract

In this paper, an optimal control scheme is presented for a ship in the presence of external disturbances. Using the backstepping technique and a disturbance observer method, a nonlinear control scheme has been designed and its closed loop system stability has been guaranteed. The parameters of the proposed controller have been optimized via a metaheuristic optimization algorithm called the firefly algorithm. In the optimization design, the modified Integral of the time-weighted absolute value of the error has been used as the cost function. To prove the effectiveness of the controller, the results are compared via simulation with the traditional backstepping controller on a model ship named Cybership II.

Publisher

SAGE Publications

Subject

Instrumentation

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