TITLE:
An Enhanced Genetic Programming Algorithm for Optimal Controller Design
AUTHORS:
Rami A. Maher, Mohamed J. Mohamed
KEYWORDS:
Genetic Programming; Optimal Control; Nonlinear Control System
JOURNAL NAME:
Intelligent Control and Automation,
Vol.4 No.1,
February
18,
2013
ABSTRACT: This paper proposes a Genetic Programming based algorithm that can be used to design optimal controllers. The proposed algorithm will be named a Multiple Basis Function Genetic Programming (MBFGP). Herein, the main ideas concerning the initial population, the tree structure, genetic operations, and other proposed non-genetic operations are discussed in details. An optimization algorithm called numeric constant mutation is embedded to strengthen the search for the optimal solutions. The results of solving the optimal control for linear as well as nonlinear systems show the feasibility and effectiveness of the proposed MBFGP as compared to the optimal solutions which are based on numerical methods. Furthermore, this algorithm enriches the set of suboptimal state feedback controllers to include controllers that have product time-state terms.